Identify the correctly matched row:
Class |
Mycelium |
Spores |
|
I. |
Phycomycetes |
Aseptate and coenocytic |
Exogenous on sporangium |
II. |
Ascomycetes |
Branched and septate |
Endogenously in asci |
III. |
Basidiomycetes |
Branched and septate |
Exogenously on basidium |
1. Only I
2. Only II
3. Only III
4. Both II and III
Match each item in COLUMN I [Protist] with one in COLUMN II [Characteristic] and select your answer from the codes given:
|
COLUMN I |
|
COLUMN II |
A. |
Chrysophytes |
a. |
Pellicle |
B. |
Dinoflagellates |
b. |
Plasmodium |
C. |
Euglenoids |
c. |
Red tides |
D. |
Slime moulds |
d. |
Chief producers in oceans |
Codes
A B C D
1. d c a b
2. d c b a
3. c d a b
4. c d b a
Artificial systems of classification give equal weightage to vegetative and sexual characteristics which is not acceptable because:
1. Only the sexually characters are genetically determined
2. Vegetative characters are more easily affected by environment
3. Sexual characters are not easily observable in living beings
4. Vegetative reproduction is equally common as sexual reproduction
How many of the animals given in the box below are triploblastic, have a true coelom but lack segmentation?
Antedon, Laccifer, Limulus, Aplysia, Dentalium, Ancylostoma, Hirudinaria, Sepia, Ophiura, Nereis |
1. 4
2. 5
3. 6
4. 7
1. | Monera | All members have a cell wall |
2. | Protista | All members are photosynthetic |
3. | Fungi | All members are heterotrophs |
4. | Animalia | All members reproduce only sexually |
Column I [Family] |
Column II [Floral characters] |
|
I: | Solanaceae | Bicarpellary obliquely placed, syncarpous, ovary superior, bilocular, placenta swollen with many ovules |
II: | Fabaceae | Ovary superior, mono carpellary, unilocular with many ovules, style single |
III: | Liliaceae | Tricarpellary, syncarpous, ovary superior, trilocular with many ovules |
Read the following statements.
(a) | Metagenesis is observed in Helminths. |
(b) | Echinoderms are triploblastic and coelomate animals. |
(c) | Round worms have organ-system level of body organization. |
(d) | Comb plates present in ctenophores help in digestion. |
(e) | Water vascular system is characteristic of Echinoderms. |
Choose the correct answer from the options given below:
1. (a), (d) and (e) are correct
2. (b), (c) and (e) are correct
3. (c), (d) and (e) are correct
4. (a), (b) and (c) are correct
In having external fertilization and indirect development, amphibians differ from all other:
I. Tetrapods
II. Gnathostomatans
III. Vertebrates
1. Only I
2. Both I and II
3. Only II
4. I, II and III
Identify the incorrect difference between a bryophyte and a pteridophyte:
|
Feature |
Bryophyte |
Pteridophyte |
1. |
Main plant body |
Gametophyte |
Sporophyte |
2. |
Vascular tissue |
Absent |
Present |
3. |
True roots |
Absent |
Present |
4. |
Transfer of antherozoids |
Water required |
Water not required |
Which of the following cell type of vascular tissue system of plants is not correctly matched with its function?
Cell type | Function | |
1. | Tracheid | Chief water conduction element in gymnosperms |
2. | Vessel element | Chief water conduction element in angiosperms |
3. | Sieve cell | Food conduction element in angiosperms |
4. | Albuminous cell | Delivery of substances to sieve cells |
Match each item in COLUMN I with one in COLUMN II and select the correct answer from the codes given:
|
COLUMN I [Cohesion of stamen] |
|
COLUMN II [Example] |
A. |
Monadelphoyus |
a. |
Sunflower |
B. |
Diadelphous |
b. |
China rose |
C. |
Syngenesious |
c. |
Cucurbits |
D. |
Synandrous |
d. |
Pea |
Codes
A B C D
1. b c d a
2. b d a c
3. c b a d
4. d c b a
In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:
1. | Root cap, cell division, cell maturation, cell enlargement |
2. | Cell division, cell enlargement, cell maturation, root cap |
3. | Cell division, cell maturation, cell enlargement, root cap |
4. | Root cap, cell division, cell enlargement, cell maturation |
The given diagram shows the transverse section of a portion of a:
1. | Monocot stem | 2. | Monocot root |
3. | Dicot stem | 4. | Dicot root |
Consider the given statements:
I. In dicot roots, the pericycle strengthens the roots and provides protection for the vascular bundles.
II. In dicot root, the vascular cambium is completely secondary in origin, and it originates from a portion of pericycle tissue.
III. The pericycle regulates the formation of lateral roots by rapidly dividing near the xylem elements of the root.
The correct statements are:
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
Vascular bundles in monocotyledons are considered closed because:
1. | a bundle sheath surrounds each bundle |
2. | cambium is absent |
3. | there are no vessels with perforations |
4. | xylem is surrounded all around by phloem |
Identify the incorrectly matched pair:
1. |
Banyan |
Hanging supportive prop roots |
2. |
Sweet potato |
Tap root modified for storage of food |
3. |
Maize |
Supportive stilt roots coming out of the lower nodes of the stem |
4. |
Rhizophora |
Respiratory roots |
Identify the incorrectly matched pair:
Biomolecule |
Function |
|
1. |
|
Main structural component of cell membranes |
2. |
|
Precursor of steroidal hormones in animals |
3. |
|
Structural component of DNA |
4. |
|
Synthesis of iodothyronines |
In a prokaryotic cell:
1. an extrachromosomal circular plastid replicates autonomously
2. mesosomes have pigments in photosynthetic bacterial cells
3. polyribosomes are not found
4. reserve materials are stored in inclusion bodies
The substrate has to go through a higher energy state or transition state during its conversion to a product in:
I: | Exothermic spontaneous reactions |
II: | Endothermic reactions |
III: | Enzyme catalyzed reactions |
1. | Only I and II |
2. | Only I and III |
3. | Only II and III |
4. | I, II, and III |
The type of epithelium shown in the diagram is most likely to be found in the lining of:
1. Terminal Ileum
2. Fallopian tubes
3. Trachea
4. Urinary bladder
Consider the two statements:
I. Mitochondria and chloroplasts are considered as the part of endomembrane system in a eukaryotic cell.
II. Their functions are coordinated with ER, GA, Lysosomes and vacuoles.
1. Only I is correct
2. Only II is correct
3. Both I and II are incorrect
4. Both I and II are correct
In the given diagram of areolar connective tissue, the structure responsible for the release of mediators of inflammation is shown by the letter:
1. A
2. B
3. C
4. D
Consider the two statements:
I. The lipids in the plasma membrane are quasi-fluid in nature.
II. They allow ‘flip-flop’ movement of the proteins
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
The given diagram shows the ultra-structure of:
1. Centriole
2. Cilium
3. Flagellum
4. Centrosome
Consider the given two statements:
I: | Lipids come under acid insoluble fraction. |
II: | Lipids are macromolecules. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | I is incorrect but II is correct |
1. | several ribosomes attached to a single mRNA |
2. | many ribosomes attached to a strand of endoplasmic reticulum |
3. | a ribosome with several subunits |
4. | ribosomes attached in a linear arrangement |
Regarding lipids:
1. Arachidonic acid has 20 carbon atoms excluding the carboxyl carbon
2. Trihydroxy propane is a component of triglycerides
3. Oils have a higher melting point than fats
4. They are polymers but not macromolecules
I: | Hepatic portal system |
II: | Renal portal system |
Mark the mismatched pair :
1. Amyloplast |
i. Store protein granule |
2. Elaioplast |
ii. Store oils or fats |
3.Chloroplasts |
iii. Contain chlorophyll pigments |
4. Chromoplasts |
iv. Contain coloured pigments other than chlorophyll |
Which of the following is the simplest amino acid?
1. Alanine
2. Asparagine
3. Glycine
4. Tyrosine
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
A linear sequence of amino acids in a peptide or a protein describes its:
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure
Which of the following stages of Meiosis I of Prophase I is not correctly matched with events occurring during that stage?
|
Stage |
Event |
1. |
Zygotene |
Pairing between homologous chromosomes |
2. |
Pachytene |
Crossing over between sister chromatids of homologous chromosomes |
3. |
Diplotene |
Tendency of recombined homologues to separate |
4. |
Diakinesis |
Terminalization of chiasmata |
The chitinous exoskeleton of arthropods is formed by the polymerization of?
1. Keratine sulphate and chondroitin sulphate
2. D-glucosamine
3. N-acetyl glucosamine
4. Lipoglycans
A cell at G1 phase has a chromosome content 2C and DNA amount 2N. What will be the chromosome content and amount of DNA in this cell at telophase of mitosis?
1. 2C and 2N
2. 2C and 4N
3. 4C and 2N
4. 4C and 4N
At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Consider the given two statements:
I. If Iodine-KI reagent is added to a solution containing cellulose a blue-black color results.
II. Cellulose forms helical secondary structures and can hold I2.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect