Custom Practice Test

Biology-I-Section-A

1. Organisms belonging to the same Class in taxonomic hierarchy must also belong to the same:

1.	Order	2.	Family
3.	Genus	4.	Phylum

2. The defining properties of living organisms include:
1. Consciousness and growth
2. Growth and reproduction
3. Consciousness and cellular organisation
4. Cellular organisation and reproduction

3. Consider the given two statements:

Statement I:	Genera are aggregates of closely related species.
Statement II:	Family has a group of related genera with still less number of similarities as compared to genus and species.

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

4.

All the following statements regarding the importance of algae are correct except:

1.	Agar is obtained from Gelidium and Gracilaria.
2.	Porphyra, Laminaria and Sargassum are marine algae used as food.
3.	Algin and carrageen are both obtained from brown algae.
4.	Chlorella is rich in proteins and is used as a food supplement even by space travellers.

5. In case of plants, classes with a few similar characters are assigned to a higher category ideally called:

1.	Phylum	2.	Division
3.	Subphylum	4.	Infra Class

6. A and B in the given diagram respectively show:

1.	Male thallus of Marchantia and Female thallus of Marchantia
2.	Female thallus of Marchantia and Male thallus of Marchantia
3.	Male thallus of Funaria and Female thallus of Funaria
4.	Female thallus of Funaria and Male thallus of Funaria

7. 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

8. Given below are two statements:

Statement I:	Chlorella is used as food supplement by space travellers
Statement II:	Chlorella is a unicellular algae

1.	Both I and II are true and II correctly explains I
2.	I is true and II is false
3.	Both I and II are true but II does not explain I
4.	Both I and II are false

9. An example of a parasitic plant will be:
1. Venus flytrap
2. Bladderwort
3. Cuscuta
4. Pitcher plant

10. Regarding the structural organisation of fungi:

I:	Their bodies consist of long, slender thread-like structures called hyphae.
II:	The network of hyphae is known as mycelium.
III:	Some hyphae are continuous tubes filled with multinucleated cytoplasm – these are called coenocytic hyphae.
IV:	The cell walls of fungi are composed of chitin and polysaccharides.

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

11.

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

1.	Types of pigments present in the cell
2.	Nature of stored food materials in the cell
3.	Structural organisation of thallus
4.	Chemical compositions of the cell wall

12. The asexual spores in Ascomycetes:

I:	are called conidia.
II:	are produced endogenously

1.	Only I is correct	2.	Only II is correct
3.	Both I and II are correct	4.	Both I and II are incorrect

13. 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

14. Study the Assertion statement followed by the Reason statement given below:

Assertion (A):	The cyanobacteria that are also referred to as blue green algae are not ‘algae’ any more.
Reason (R):	The cyanobacteria are photosynthetic autotrophs.

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

15. Identify the incorrect statement regarding cyanobacteria:

1.	They have chlorophyll a (similar to green plants)
2.	They are unicellular and never colonial or filamentous
3.	They often form blooms in polluted water bodies
4.	Some of them can fix atmospheric nitrogen

16. Who, amongst the following, has been called as ‘The Darwin of the 20th Century’?
1. Ernst Haeckel
2. Ernst Hemingway
3. Ernst Mayr
4. Ernst Chain

17. Consider the given two statements:

Statement I:	Classification of living organisms is important to make study of living organisms possible.
Statement II:	Classification is the process by which anything is grouped into convenient categories based on some easily observable characters.

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

18.

Coralloid roots in Cycas are associated with nitrogen fixing:

1.	Rhizobium	2.	Frankia
3.	Azospirillum	4.	Cyanobacteria

19. The taxonomic category - Order Primata – includes all of the following animals except:
1. Monkey
2. Gorilla
3. Gibbon
4. Tiger

20. Which kingdom of the Five Kingdom classification system was divided into two domains in the three Domain classification system?
1. Monera
2. Protista
3. Fungi
4. Plantae

21. In animals:

I:	growth by cell division occurs continuously throughout their life span.
II:	cell division occurs in certain tissues to replace lost cells.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

22. What will not be true for members of Kingdom Fungi?

1.	The fungi are heterotrophic organisms.
2.	Fungi are cosmopolitan and occur in air, water, soil and on animals and plants.
3.	They prefer to grow in warm and humid places.
4.	None of the members is unicellular.

23.

Which one of the following statements is wrong?

1.	Golden algae are also called desmids
2.	Eubacteria are also called false bacteria.
3.	Phycomycetes are also called algal fungi.
4.	Cyanobacteria are also called blue-green algae.

24. Study the Assertion statement followed by the Reason statement given below:

Assertion (A):	Peat moss is used as packing material for trans-shipment of living material.
Reason (R):	Peat moss has a good capacity to hold water.

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

25. The leaves in pteridophyta are:
1. microphylls in Selaginella or macrophylls in ferns.
2. macrophylls in Selaginella or microphylls in ferns.
3. microphylls in Selaginella and ferns.
4. macrophylls in Selaginella and ferns.

26. Cr-Jacob disease (CJD) in humans is caused by:

1.	Prions	2.	Viroids
3.	Virus	4.	Lichens

27.

Statement I:	Dinoflagellates are mostly marine and photosynthetic.
Statement II:	Majority of Euglenoids are fresh water organisms.

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

28. What is the correct order of the steps involved in the sexual cycle of organisms belonging to the Kingdom Fungi?

1.	Meiosis in zygote — Plasmogamy — Karyogamy
2.	Karyogamy — Meiosis in zygote — Plasmogamy
3.	Plasmogamy — Karyogamy — Meiosis in zygote
4.	Karyogamy — Plasmogamy — Meiosis in zygote

29.

In bryophytes and pteridophytes, transport of male gametes requires?

1.	insects	2.	birds
3.	water	4.	wind

30. Consider the two statements:

Statement I:	Viruses are obligate cellular endoparasites.
Statement II:	Once they infect a cell they take over the machinery of the host cell to replicate themselves, killing the host.

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

31. All the following will be correct for members of Chlorophyceae except:

1.	Chlorophyll a and Chlorophyll b are dominant photosynthetic pigments
2.	Pyrenoids seen in chloroplasts in most
3.	Cellulosic cell wall
4.	2 unequal and lateral flagellar insertions

32.

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.

33. The classification system given by Bentham and Hooker is a/an:

1.	Artificial system	2.	Natural system
3.	Phylogenetic system	4.	Useless system

34. Called ‘The Darwin of the 20th century’, identify the biologist who almost single-handedly made the origin of species diversity the central question of evolutionary biology that it is today:

1.	Ernst Mayr	2.	Louis Pasteur
3.	Charles Darwin	4.	Hugo de Vries

35. The giant redwood tree Sequoia, one of the tallest tree species, is a:

1.	Liverwort	2.	Moss
3.	Gymnosperm	4.	Angiosperm

Biology-I-Section-B

36. The organism shown in the given figure is a/an:

1.	Archaebacterium	2.	Chrysophyte
3.	Dinoflagellate	4.	Blue green laga

37. Plasmodium, the malarial parasite, is a:
1. Slime mould
2. Sporozoan
3. Extremophile
4. Dinoflagellate

38. The classification based on the premise that organisms belonging to the same taxa have a common ancestor is called as:
1. Cytotaxonomy
2. Phylogenetic system
3. Chemotaxonomy
4. Numerical taxonomy

39. Algal cell walls are made up of:

1.	Cellulose, Galactans, Mannans and Minerals
2.	Cellulose, Hemicellulose, Pectins and Proteins
3.	Cellulose, Pectins, Mannans and Minerals
4.	Cellulose, Hemicellulose, Mannans and Pectins

40. The number of species that are known and described range between:
1. 0.8 and 1.0 million
2. 1.0 and 1.2 million
3. 1.5 and 1.7 million
4. 7.0 and 8.0 million

41. Mycoplasma:

I:	completely lack a cell wall
II:	are the smallest living cells known
III:	can survive without oxygen

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

42.

Which arrangement is in correct ascending order?

1.	Species < genus < order < family
2.	Genus < species < family < order
3.	Order < family < genus < species
4.	Species < genus < family < order

43.

Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?

	A	B	C	D
1.	Sheath	Collar	Head	Tail fibres
2.	Head	Sheath	Collar	Tail fibres
3.	Collar	Tail fibres	Head	Sheath
4.	Tail fibres	Head	Sheath	Collar

44. How many of the given statements regarding sexual reproduction in Bryophytes are true?

I:	The sex organs in bryophytes are multicellular.
II:	The male sex organ is called antheridium and they produce biflagellate antherozoids.
III:	The female sex organ called archegonium is flask-shaped and produces a single egg.
IV:	The antherozoids are released into water where they come in contact with archegonium.
V:	Zygotes undergo reduction division immediately.

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

45. Taxonomy is the part of systematics that is concerned with:

(a)	characterization and identification of living organisms
(b)	classification and nomenclature of living organisms
(c)	establishing evolutionary relationships between living organisms

1.	Only (a) and (b)	2.	Only (a) and (c)
3.	Only (b) and (c)	4.	(a), (b) and (c)

46. Though their main body is sporophyte, yet, free-living photosynthetic gametophyte can be seen in:

1.	Bryophytes	2.	Pteridophytes
3.	Gymnosperms	4.	Angiosperms

47. Members belonging to Solanaceae and Convolvulaceae will not belong to the same:

I:	Order
II:	Family
III:	Division

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

48. What would be true regarding structures labelled as A and B in the given diagram of Funaria, a moss?

I:	A is the gametophyte and B is the sporophyte.
II:	The ploidy of cells in A will be haploid and the ploidy of cells in B will be diploid.

1. Only I
2. Only II
3. Both I and II
4. Neither I nor II

49. Chemosynthetic autotrophic bacteria play a great role in:

1.	forming blooms in polluted water bodies
2.	recycling nutrients like nitrogen, phosphorous, iron and sulphur
3.	making curd from milk
4.	fixing nitrogen in legume roots

50. If you are writing the binomial name of an organism you should not:

1.	write the name in italics
2.	separately underline them
3.	start the genus name with a capital letter
4.	start the specific epithet with a capital letter

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