Biology Prodigy Test #2 (Part Test)

Botany - Section A

1. In reference to the given figure, the position of ovary and type of flowers respectively will be:

1. Superior, Hypogynous
2. Inferior, Epigynous
3. Half-inferior, Perigynous
4. Inferior, Epigynous

2.

Which one of the following matches is correct?

(a)	Phytophthora	Aseptate Mycelium	Basidiomycetes
(b)	Alternaria	Sexual reproduction Absent	Deuteromycetes
(c)	Mucor	Reproduction by conjugation	Ascomycetes
(d)	Agaricus	Parasitic fungus	Basidiomycetes

1. (a)
2. (b)
3. (c)
4. (d)

3.

The most abundant prokaryotes helpful to human in making curd from milk and in production of antibiotics are the ones categorized as:

1.	Cyanobacteria	2.	Archaebacteria
3.	Chemosynthetic autotrophs	4.	Heterotrophic bacteria

4. Consider the two statements:

Assertion (A):	Iodine-KI reagent can be used to detect starch in a sample.
Reason (R):	Starch can hold iodine molecules in its helical portion and starch-iodine is blue in colour.

1.	Both (A) and (R) are True but (R) does not correctly explain(A).
2.	(A) is True but (R) is False.
3.	Both (A) and (R) are False.
4.	Both (A) and (R) are True and (R) correctly explains (A).

5. The non-technical term Bark in an old woody stem does not include:

1.	Cork	2.	Secondary phloem
3.	Secondary cortex	4.	Vascular cambium

6.

All the following regarding collenchyma tissue in plants are correct except:

1.	It occurs below the epidermis of stem and leaves in most monocots
2.	It is found either as a homogenous layer or in patches
3.	Cells are much thickened at the corners
4.	Intercellular spaces are absent

7.

Pericarp is a derivative of:

1.	integuments	2.	ovule wall
3.	ovary wall	4.	placenta

8. Match each item in COLUMN I with one in COLUMN II and select the correct match from the codes given:

	COLUMN I [Modification of plant part]		COLUMN II [Example]
A	Leaf spine	P	Pea
B	Leaf tendril	Q	Bougainvillea
C	Stem tendril	R	Cucumber
D	Stem thorn	S	Cactus

Codes:

	A	B	C	D
1.	P	R	Q	S
2.	S	R	P	Q
3.	S	P	R	Q
4.	S	P	Q	R

9. Identify the correct set of statements:

(a)	The leaﬂets are modiﬁed into pointed hard thorns in Citrus and Bougainvillea
(b)	Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin
(c)	Stem is ﬂattened and ﬂeshy in Opuntia and modiﬁed to perform the function of leaves
(d)	Rhizophora shows vertically upward growing roots that help to get oxygen for respiration
(e)	Subaerially growing stems in grasses and strawberry help in vegetative propagation

Choose the correct answer from the options given below:
1. (a), (b), (d), and (e) only
2. (b), (c) only
3. (a), (d) only
4. (b), (c), (d) and (e) only

10. In an epigynous flower, the ovary is situated:

1.	below other floral parts
2.	above other floral parts
3.	at the same level as other floral parts
4.	not on the thalamus

11. What is the correct description of a prothallus?

1.	A structure in gymnosperms formed just after fertilisation
2.	A sporophytic free living structure formed in pteridophytes
3.	A gametophytic free living structure formed in pteridophytes
4.	Sex organs bearing stage in Bryophytes

12. How many of the given statements regarding various modifications in leaves are correct?

I.	Leaves are modified into tendrils for climbing as in pea.
II.	Leaves are modified into spines for defence as in cacti.
III.	The leaves of onion and garlic store food.
IV.	In Australian acacia, petioles expand, become green and synthesize food.
V.	The trapping structure of venus fly trap and pitcher of pitcher plant are modified leaves.

1.	2	2.	3
3.	4	4.	5

13. In Cycas:

I:	coralloid roots are associated with N₂-fixing cyanobacteria
II:	the stems are unbranched
III:	the pinnate leaves persist for a few years

1.	Only I and II are correct
2.	Only I and III are correct
3.	Only II and III are correct
4.	I, II and III are correct

14.

In angiosperms:

1.	the outside of the root epidermis is often covered with a waxy thick layer called the cuticle.
2.	the guard cells possess chloroplasts.
3.	the root hairs are usually multi-cellular.
4.	the trichomes in the shoot system are usually unicellular.

15.

The stems of maize and sugarcane have:

1.	stilt roots that are hanging and supporting structures
2.	prop roots that are hanging and supporting structures
3.	prop roots coming out from the nodes in upper stem
4.	supporting stilt roots coming out of the lower nodes of the stem

16. Which of the following will not be true for gymnosperms?

1.	Gymnosperms lack vessels in their xylem.
2.	Gymnosperms have albuminous cells and sieve cells.
3.	Gymnosperms lack sieve tubes and companion cells.
4.	Gymnosperms lack secondary growth.

17.

Root hairs develop from the region of:

1.	Elongation	2.	Root cap
3.	Meristematic activity	4.	Maturation

18.

Consider the following statements:

I:	Imbricate aestivation is seen in Cassia and gulmohar.
II:	In Dianthus and Primrose, placentation is free central.
III:	Seeds of pea, gram and bean are non-endospermous.

Which of the above statements are true?

1.	I and II only	2.	I and III only
3.	II and III only	4.	I, II and III

19. Consider the two statements:

Assertion (A):	In a plant cell, the concentration of a number of ions is significantly higher in the vacuole than in the cytoplasm.
Reason (R):	The tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

20.

Consider the following statements:

I:	Whorled phyllotaxy is seen in Alstonia.
II:	Flowers of mustard, datura and chilli are actinomorphic.
III:	The ovary in plum, peach and rose is epigynous.

Which of the above statements are true?

1.	I and II only	2.	I and III only
3.	II and III only	4.	I, II and III

21.

Infectious proteins are present in:

1.	geminiviruses	2.	prions
3.	viroids	4.	satellite viruses

22.

Select the wrong statement from the following:

1.	Both chloroplast and mitochondria contain an inner and an outer membrane.
2.	Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane.
3.	Both chloroplasts and mitochondria contain DNA.
4.	The chloroplasts are generally much larger than mitochondria.

23.

The technical term used for the androecium in a flower of China rose (Hibiscus rosa-sinensis) is:

1.	monadelphous	2.	diadelphous
3.	polyandrous	4.	polyadelphous

24. Consider the two statements:

Statement I:	Bryophytes usually occur in damp, humid and shaded localities and are not truly ‘successful’ on land.
Statement II:	They are dependent on water for sexual reproduction.

1.	Statement I is correct and Statement II is incorrect
2.	Both Statement I and Statement II are correct and Statement II explains Statement I
3.	Statement I is incorrect and Statement II is correct
4.	Both Statement I and Statement II are correct but Statement II does not explain Statement I

25.

Match each item in Column-I (Protist) with one in Column-II (Characteristic) and select the correct option:

	Column-I (Protist)		Column-II (Characteristic)
A.	Chrysophytes	P.	Plasmodium
B.	Dinoflagellates	Q.	Chief producers in the ocean
C.	Euglenoids	R.	Stiff cellulose plates in cell wall on outer surface
D.	Slime moulds	S.	Two flagella, one long and one short

Codes:

	A	B	C	D
1.	R	Q	S	P
2.	Q	S	P	R
3.	Q	R	S	P
4.	R	S	Q	P

26. Match each item in Column I with one in Column II and select the correct match from the codes given:

	Column I		Column II
A	Ulothrix	P	Brown algae with diplontic life cycle
B	Ectocarpus	Q	Major pigments are chlorophyll a and b
C	Fucus	R	Brown algae with haplo-diplontic life cycle
D	Polysiphonia	S	Lack flagella

Codes:

	A	B	C	D
1.	P	S	Q	R
2.	Q	P	R	S
3.	Q	R	P	S
4.	R	Q	S	P

27. Match each item in Column-I with one in Column-II regarding taxonomic categories of wheat and select the correct match from the codes given:

	Column-I		Column-II
A.	Family	P.	Monocotyledonae
B.	Order	Q.	Poaceae
C.	Class	R.	Angiospermae
D.	Division	S.	Poales

Codes:

	A	B	C	D
1.	S	Q	R	P
2.	S	Q	P	R
3.	Q	S	P	R
4.	Q	S	R	P

28.

Which one is wrongly matched?

1.	Uniflagellate gametes - Polysiphonia
2.	Biflagellate zoospores - Brown algae
3.	Gemma cups - Marchantia
4.	Unicellular organism - Chlorella

29. Consider the two statements:

Statement I:	Ribosomes are non-membrane bound organelles found in all cells.
Statement II:	Animal cells contain a non-membrane bound organelle called centrosome which helps in cell division.

1.	Statement I is correct; Statement II is correct
2.	Statement I is correct; Statement II is incorrect
3.	Statement I is incorrect; Statement II is correct
4.	Statement I is incorrect; Statement II is incorrect

30. Identify the incorrect statement regarding the cell cycle of a typical eukaryotic cell:

1.	The interphase lasts more than 95% of the duration of the cell cycle.
2.	M phase starts with the nuclear division.
3.	Interphase is the resting stage in the cell cycle where the cell is metabolically inactive.
4.	Neurons in human body are permanently in G₀ phase of the cell cycle.

31.

Crossing over takes place between which chromatids and in which stage of the cell cycle?

1.	Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I.
2.	Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.
3.	Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I.
4.	Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.

32. Classification system based on information like chromosome number, structure, behaviour is called as:
1. Numerical taxonomy
2. Cytotaxonomy
3. Chemotaxonomy
4. Cladistics

33. Match each item in Column-I with one in Column-II and select the correct match from the codes given:

	Column-I [Protist]		Column-II [Feature of wall]
A.	Diatoms	P.	Cell wall has stiff cellulose plates on outer surface
B.	Dinoflagellates	Q.	Cell wall embedded with silica
C.	Euglenoids	R.	Protein rich layer instead of a cell wall
D.	Slime moulds	S.	True walls in spores

Codes:

	A	B	C	D
1.	Q	P	R	S
2.	Q	P	S	R
3.	P	Q	R	S
4.	P	Q	S	R

34. Consider the two given statements:

Statement I:	Association between mycobiont and phycobiont is found in Lichens.
Statement II:	An association between roots of higher plants and fungi is called mycorrhiza.

1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct

35.

Which of the following are most suitable indicators of SO₂ pollution in the environment?
1. Lichens
2. Conifers
3. Algae
4. Fungi

Botany - Section B

36.

Given are the following five statements (I - V) for your consideration:

I:	In Equisetum, the female gametophyte is retained on the parent sporophyte
II:	In Ginkgo, the male gametophyte is not independent
III:	The sporophyte in Marchantia is more developed than that in Polytrichum
IV:	Sexual reproduction in Volvox is isogamous
V:	The spores of slime moulds lack cell walls

How many of the above statements is/are correct?

1.	Three	2.	Four
3.	One	4.	Two

37. Study the given diagram of phloem tissue in angiosperms and select the correct statements:

Statement I:	‘A’ at maturity lose its protoplasm and becomes dead.
Statement II:	‘B’ stores food material and other substances like resins, latex, and mucilage.

1. Statement I is incorrect; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect

38.

Which of the following statements would be true for brown algae?

1.	Major pigments are chlorophyll a, c and fucoxanthin.
2.	Food is stored as floridean starch.
3.	Vegetative cells have wall made of cellulose, pectin and polysulphate esters.
4.	Flagellar number and insertions are 2, equal and apical.

39.

How many organisms in the list given below are autotrophs?

Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolfia

1. Five
2. Six
3. Three
4. Four

40.

Identify the correct statement regarding the part of a cell, the structure of which is shown in the given diagram:

1.	It is not found in the plant cells
2.	It serves to provide an attachment with a surface for a bacterial cell
3.	The structure is made of a protein called flagellin
4.	It can be used for movement by a eukaryotic cell

41. At the root tip, which of the following regions will be the most ‘distal’?

1.	Region of meristematic activity
2.	Region of root hairs
3.	Region of maturation
4.	Region of elongation

42. Match each item in Column I with only one in Column II and select the correct match from the codes given:

	Column I [Covering of plant cell]		Column II [Location]
A.	Primary cell wall	P.	On the inner [towards membrane] side of the cell
B.	Secondary cell wall	Q.	Between the primary and the secondary cell wall
C.	Middle lamella	R.	On the outer [towards middle lamella] side of the cell
		S.	Between middle lamella and secondary cell wall
		T.	Holding adjacent plant cells

Codes:

	A	B	C
1.	R	P	Q
2.	R	S	Q
3.	S	R	T
4.	S	P	T

43. The onion root tip cell has 16 chromosomes (2n). What would be the number of chromosomes in this cell after the S phase and at the end of mitotic anaphase, respectively?

1.	16 and 16	2.	16 and 32
3.	8 and 16	4.	16 and 8

44.

According to the widely accepted "fluid mosaic model", cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect:

1.	Proteins can also undergo flip-flop movements in the lipid bilayer
2.	Many proteins remain completely embedded within the lipid bilayer
3.	Proteins in cell membranes can travel within the lipid bilayer
4.	Proteins can remain confined within certain domains of the membrane

45. Nomenclature is governed by certain universal rules. Which one of the following is not contrary to the rules of nomenclature?

1.	The ﬁrst word in a biological name represents the specific epithet and the second is a genus name.
2.	The names are derived from Greek and written in italics.
3.	When written by hand, the names are to be separately underlined.
4.	Biological names can be written in any language.

46.

Slime molds:

1.	form plasmodium that differentiates and forms fruiting bodies bearing spores at their tips during unfavourable conditions.
2.	form plasmodium that differentiates and forms fruiting bodies bearing spores at their tips during favourable conditions.
3.	form plasmodium under favourable conditions and the plasmodium differentiates and forms fruiting bodies bearing spores at their tips during unfavourable conditions.
4.	form plasmodium under unfavourable conditions and the plasmodium differentiates and forms fruiting bodies bearing spores at their tips during favourable conditions.

47.

Given below is the graph showing the effect of substrate concentration on enzyme activity. In the presence of a competitive inhibitor, when the concentration of the substrate is progressively increased:

1.	The K_m value increases but the reaction will not achieve V_max
2.	The K_m value increases but the reaction can ultimately achieve V_max
3.	The K_m value decreases but the reaction will not achieve V_max
4.	The K_m value decreases but the reaction can ultimately achieve V_max

48.

Aestivation of petals in the flower of cotton is correctly shown in:

1.		2.
3.		4.

49.

Which one of the following diagrams represents the placentation in Dianthus?

1.		2.
3.		4.

50. Cotton, a major fibre crop and an important cash crop, belongs to plant family:
1. Brassicaceae
2. Malvaceae
3. Asteraceae
4. Poaceae

Zoology - Section A

51.

Identify the incorrect pair.

1.	Lectins - Concanavalin A	2.	Drugs - Ricin
3.	Alkaloids - Codeine	4.	Toxin - Abrin

52. Which of the following biomolecules makes up maximum percentage of the average composition of a cell?
1. Carbohydrates
2. Proteins
3. Lipids
4. Nucleic acids

53. Polysaccharides can be cleaved into constituent monosaccharides by hydrolysis. How many water molecules will be needed to cleave a polysaccharide, containing 100 monosaccharides, completely?

1.	99	2.	100
3.	101	4.	51

54.

Which of the following are not polymeric?

1.	Proteins	2.	Polysaccharides
3.	Lipids	4.	Nucleic acids

55.

Unlike roundworms, flatworms:
1. are triploblastic
2. exhibit bilateral symmetry
3. do not have a coelom
4. reproduce only by sexual methods

56.

As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics:

1.	Will decrease	2.	Will increase
3.	Will remain same	4.	May increase or decrease

57. Which one of the following organelles in the figure correctly matches with its function?

1.	Golgi apparatus, protein synthesis
2.	Golgi apparatus, formation of amino acids
3.	Rough endoplasmic reticulum, protein synthesis
4.	Rough endoplasmic reticulum, formation of glycoproteins

58. Identify the incorrect statement:

1.	Cytosine is common for both DNA and RNA.
2.	Uracil is present in RNA at the place of Thymine.
3.	A nitrogenous base is linked to the OH of 1'C pentose sugar through a N-glycosidic linkage to form a nucleoside.
4.	When a phosphate group is linked to OH of 2'C of a nucleoside through phosphoester linkage, a corresponding nucleotide is formed.

59. The activator of alcohol dehydrogenase enzyme is:

1.	Zinc	2.	Magnesium
3.	Manganese	4.	Molybdenum

60. The biomolecule shown in the given figure is:

1.	an aromatic amino acid
2.	a zwitterion
3.	a substituted pyrimidine
4.	a substituted purine

61.

Consider the following statements:

I:	There is no uncatalysed metabolic conversion in living systems.
II:	The living state is a non-equilibrium steady state to be able to perform work.
III:	The living state and metabolism are synonyms, without metabolism there cannot be a living state.

Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III

62. The fruit fly has 8 chromosomes (2n) in each cell. During the interphase of mitosis, if the number of chromosomes at G₁ phase is 8, what would be the number of chromosomes after the S phase?

1.	4	2.	32
3.	8	4.	16

63.

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
1. Metaphase-II
2. Anaphase-I
3. Anaphase-II
4. Metaphase-I

64.

Select the wrong statement:

1.	Bacterial cell wall is made up of peptidoglycan
2.	Pili and fimbriae are mainly involved in the motility of bacterial cells
3.	Cyanobacteria lack flagellated cells
4.	Mycoplasma is a wall-less microorganism

65.

Identify the incorrectly matched pair:

	Type of epithelium	Location
1.	Simple squamous	Blood vessels and alveoli
2.	Simple cuboidal non brush bordered epithelium	Proximal convoluted tubule
3.	Columnar epithelium	Stomach and small intestine
4.	Ciliated epithelium	Bronchioles and fallopian tubes

66.

Which of the following is true for nucleolus?

1.	Larger nucleoli are present in dividing cells.
2.	It is a membrane-bound structure.
3.	It takes part in spindle formation.
4.	It is a site for active ribosomal RNA synthesis.

67.

Consider the following statements:

I:	In animal cells, lipid like steroidal hormones are synthesized in SER.
II:	Golgi apparatus is the important site for formation of glycoproteins & glycolipids.
III:	Lysosomes carry alkaline hydrolases.

Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III

68. Centrosome:

1.	is a non- membrane bound organelle found in all cells which helps in cell division
2.	is a non- membrane bound organelle found in plant cells which helps in cell division
3.	is a non- membrane bound organelle found in animal cells which helps in DNA replication
4.	is a non- membrane bound organelle found in animal cells which helps in cell division

69. Consider the given two statements:

Statement I:	All prokaryotes have a cell wall surrounding the cell membrane except in mycoplasma.
Statement II:	No organelles, like the ones in eukaryotes, are found in prokaryotic cells except for ribosomes.

1.	Statement I is correct; Statement II is correct
2.	Statement I is incorrect; Statement II is correct
3.	Statement I is correct; Statement II is incorrect
4.	Statement I is incorrect; Statement II is incorrect

70. Identify the correct sequence of events during Prophase I of meiosis:

(a)	Synapsis of homologous chromosomes
(b)	Chromosomes become gradually visible under microscope
(c)	Crossing over between non-sister chromatids of homologous chromosomes
(d)	Terminalisation of chiasmata
(e)	Dissolution of synaptonemal complex

Choose the correct answer from the options given below:
1. (a), (b), (c), (d), (e)
2. (b), (c), (d), (e), (a)
3. (b), (a), (c), (e), (d)
4. (a), (c), (d), (e), (b)

71. Unlike Arthropods, Annelids:

1.	have a true coelom lined by embryonic mesoderm
2.	have a closed circulatory system
3.	do not reproduce by sexual methods
4.	have a complete digestive system

72. In Obelia:

a:	both polyp and medusa forms exist during its life cycle
b:	metagenesis, a sort of alternation of generation, is seen
c:	polyps produce medusae sexually and medusae form the polyps sexually

1.	only a is correct	2.	only a and b are correct
3.	only c is correct	4.	a, b and c are correct

73. In the 24 hour average duration of cell cycle of a human cell, cell division properly lasts for:

1.	only about 1 hour
2.	approximately 90 minutes
3.	between 4 and 5 hours
4.	95% time of the cell cycle

74.

How many of the given statements regarding the anatomy of frogs are correct?

A:	Kidneys are situated a little posteriorly in the body cavity on both sides of the vertebral column.
B:	Each kidney is composed of several structural and functional units called uriniferous tubules or nephrons.
C:	Two ureters emerge from the kidneys in male frogs, where the ureters act as urinogenital ducts that open into the cloaca.
D:	In females, the ureters and oviduct open separately in the cloaca.

1.	1	2.	2
3.	3	4.	4

75. Match each item in Column I with one in Column II and select the correct match from the codes given:

	Column I [Structure of a prokaryotic cell]		Column II [Function]
A	Mesosome	P	Attachment to the substrate
B	Chromatophore	Q	Conjugation
C	Fimbriae	R	Photosynthetic pigments
D	Pili	S	DNA replication

Codes:

	A	B	C	D
1.	S	R	P	Q
2.	S	R	Q	P
3.	R	S	Q	P
4.	R	S	P	Q

76. Identify the incorrect match:

	Structure of Cockroach	Location
1.	Testes	4-6^th abdominal segments
2.	Mushroom gland	8-9^th abdominal segments
3.	Ovaries	2-6^th abdominal segments
4.	Spermatheca	6^th abdominal segment

77. Choose the correct statement about a muscular tissue:

1.	Skeletal muscle ﬁbres are uninucleated and found in parallel bundles.
2.	Intercalated discs allow the skeletal muscle cells to contract as a unit.
3.	Skeletal muscles are striated and voluntary.
4.	Smooth muscles are multinucleated and involuntary

78.

Match each item in Column-I with ONLY one in Column-II and select the correct match from the codes given:

	Column-I [Structure in Cockroach]		Column-II [Location]
A	Forewings	P	Prothorax
B	Hind wings	Q	Mesothorax
C	Anal cerci	R	Metathorax
		S	10^th segment but absent in females
		T	10^th segment and present in both sexes

Codes:

	A	B	C
1.	Q	R	S
2.	Q	R	T
3.	P	Q	S
4.	R	R	T

79.

In birds:

a:	the characteristic feature is the presence of feathers.
b:	forelimbs are modified into wings.
c:	flight is present in all members.
d:	hind limbs do not have scales.

1.	Only (a) and (d) are incorrect
2.	Only (c) and (d) are correct
3.	(a), (b) and (c) are correct
4.	Only (a) and (b) are correct

80. Given below are two statements:

Assertion (A):	Frogs help maintain ecological balance.
Reason (R):	Frogs serve as an important link in the food chain and food web in the ecosystem.

In the light of the above statements choose the correct answer from the options given below:

1.	(A) is True but (R) is False.
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	Both (A) and (R) are True and (R) is the correct explanation of (A).
4.	(A) is False but (R) is True.

81.

A water vascular system is characteristically seen in animals belonging to the Phylum:

1.	Porifera	2.	Ctenophora
3.	Echinodermata	4.	Hemichordata

82.

Which one of the following pair of animals comprises 'jawless fishes'?

1.	Lampreys and eels
2.	Mackerals and rohu
3.	Lampreys and hagfishes
4.	Guppies and hagfishes

83. Earth has amazing bio-diversity. The number of species on Earth that are known and described ranges between:

1.	0.8 - 1.0 million	2.	1.7 - 1.8 million
3.	7 – 8 million	4.	20 – 50 million

84. Given below are two statements:

Statement I:	A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal).
Statement II:	Adult human haemoglobin, consists of 4 subunits (two subunits of \(\alpha\) type and two subunits of ẞ type.)

In the light of the above statements, choose the correct answer from the options given below:

1.	Statement I is false but Statement II is true.
2.	Both Statement I and Statement II are true.
3.	Both Statement I and Statement II are false.
4.	Statement I is true but Statement II is false.

85. In the given diagrammatic representation of internal organs of a frog showing the complete digestive system, identify I, II, III, IV:

	I	II	III	IV
1.	Oesophagus	Liver	Gall bladder	Fat bodies
2.	Pharynx	Liver	Gall bladder	Uricose glands
3.	Buccal cavity	Gall bladder	Liver	Antennal glands
4.	Oesophagus	Gall bladder	Liver	Fat bodies

Zoology - Section B

86. Consider the given two statements:

Statement 1:	Hemichordates were earlier considered as a sub-phylum under Phylum Chordata but are now placed separately in a phylum under non-Chordata.
Statement 2:	Hemichordates have a rudimentary structure in the collar region called stomochord, a structure homologous to the notochord.

1.	Both Statement 1 and Statement 2 are correct but Statement 2 does not explain Statement 1.
2.	Statement 1 is correct and Statement 2 is incorrect.
3.	Both Statement 1 and Statement 2 are incorrect.
4.	Both Statement 1 and Statement 2 are correct and Statement 2 explains Statement 1.

87.

Which one of the following phyla is correctly matched with its two general characteristics?

1.	Arthropoda - The body is divided into a head, thorax, abdomen and respiration by mouth
2.	Chordata - Notochord at some stage and separate anal and urinary openings to the outside
3.	Echinodermata – Pentamerous radial symmetry and mostly internal fertilization
4.	Mollusca - Normally oviparous and developed through a trochophore or veliger larva

88.

An animal with the following body wall organization will not have:

1. Cephalization
2. Three germ layers
3. Bilateral symmetry
4. A complete digestive tract

89. Identify the correct statements:

Statement I:	Frog eye does not have closable eye lids.
Statement II:	A nictitating membrane provides protection to the eye, especially when the frog is swimming.

1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct

90. Being cold-blooded, frogs have to adopt suitable behaviour patterns to regulate their temperature.
Which of the following will be true?

I:	To warm up, they can move into the sun or onto a warm surface; if they overheat, they can move into the shade.
II:	In cool damp conditions, the colour of the skin will be lighter than on a hot dry day.

1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct

91.

In the given diagram of areolar tissue, identify a phagocytic cell:

1.	A	2.	B
3.	C	4.	D

92. Consider the given two statements:

Assertion (A):	Lipids come under acid insoluble fraction of the cell.
Reason (R):	Acid insoluble fraction is the macromolecular fraction and lipids are macromolecules.

1.	(A) is True but (R) is False
2.	Both (A) and (R) are True and (R) correctly explains (A)
3.	Both (A) and (R) are True and but (R) does not correctly explain (A)
4.	(A) is False but (R) is True

93. Rates of physical and chemical processes are influenced by temperature among other factors. A general rule of thumb is that rate:

1.	doubles by half for every 10°C change in either direction
2.	decreases by half for every 10°C change in either direction
3.	doubles or decreases by half for every 10°C change in either direction
4.	doubles or decreases by half for every 5°C change in either direction

94. Consider the given two statements:

Statement I:	Periplaneta americana is dioecious.
Statement II:	The development of Periplaneta americana is holometabolous.

1.	Statement I is correct; Statement II is correct
2.	Statement I is incorrect; Statement II is correct
3.	Statement I is correct; Statement II is incorrect
4.	Statement I is incorrect; Statement II is incorrect

95. A ‘sea-horse’ is a:

1.	marine bony fish
2.	fresh water bony fish
3.	cartilaginous fish
4.	cyclostome

96.

Which of the following statements is not correct?

1.	Lysosomes are formed by the process of packaging in the endoplasmic reticulum.
2.	Lysosomes have numerous hydrolytic enzymes
3.	The hydrolytic enzyme of lysosomes are active under acidic pH
4.	Lysosomes are membrane bound structure.

97. The members of which of the following animal phyla are not exclusively marine?
1. Porifera
2. Ctenophora
3. Echinodermata
4. Hemichordata

98. Which of the following is not a characteristic of Amphibians?

1.	Most have two pairs of limbs and tail is present in some.
2.	Alimentary canal, urinary and reproductive tracts open into a common chamber called cloaca which opens to the exterior.
3.	Respiration is by gills, lungs and through skin.
4.	The heart is two chambered with one atrium and one ventricle.

99.

Enzymes that catalyze removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are:

1.	Dehygdrogenases	2.	Transferases
3.	Lyases	4.	Ligases

100. Consider the two statements:

Statement I:	The interphase represents the phase between two successive M phases and DNA replication takes place in the interphase.
Statement II:	The stage between the two meiotic divisions is called interkinesis and there is no replication of DNA during interkinesis.

1.	Statement I is correct; Statement II is correct
2.	Statement I is correct; Statement II is incorrect
3.	Statement I is incorrect; Statement II is correct
4.	Statement I is incorrect; Statement II is incorrect

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