1. Which one of the following ecosystems is represented by an inverted pyramid of numbers?
2. Raphides are deposits of
3. Which one of the following families shows bicollateral vascular bundle in the transverse section of the stem?
4. Arbuscules are highly branched structures, formed
5. Which one of the following combinations of polysaccharides is present in plant cell wall?
6. Which one of the following statements is INCORRECT?
7. Which one of the following statements is INCORRECT with respect to cyclic photophosphorylation?
8. The plant cells are considered totipotent. The phenomenon of a mature cell reverting to the meristematic state and forming undifferentiated callus tissue is called
9. Glyphosate is a broad spectrum herbicide. Upon application to leaves, it is translocated to meristematic areas and underground rhizomes by
1 out of 2
11. Rubisco catalyzes conversion of ribulose 1,5-bisphosphate to
P. two molecules of stable 3-phosphoglycerate Q. one molecule of 3-phosphoglycerate and one molecule of phosphoglycolate R. one molecule of ribulose 5-phosphophate S. one molecule of ribose 5-phosphate Choose only the correct combination
12. Select correct combination of molecules given in Group I with their functions in Group II
Group I .............................Group II P. Ubiquitin .............1. Cell wall loosening enzymes Q. Phytotropins ......2. Repressors in gibberellin signaling R. Extensins ..........3. Mediator of protein degradation S. DELLA proteins ..4. Noncompetitive inhibitors of polar transport of auxin
P-3, Q-4, R-1, S-2
P-1, Q-2, R-4, S-3
P-3, Q-1, R-2, S-4
P-4, Q-3, R-1, S-2
None
13. Match the plant species and their corresponding families with their economically important products:
Plant species .....................Family .................Plant product P. Cannabis sativa .........1. Lamiaceae .........i. Oil from seeds Q. Corchorus olitorius ....2. Cannabaceae ....ii. Eugenol from leaves R. Ocimum sanctum .....3. Euphorbiaceae ...iii. Fibre from stem S. Ricinus communis ....4. Tiliaceae ............iv. Marijuana from leaves
P-2-iv, Q-3-ii, R-4-iii, S-1-i
P-2-iv, Q-4-iii, R-1-ii, S-3-i
P-1-iii, Q-4-iii, R-2-i, S-3-ii
P-3-iv, Q-2-i, R-1-ii, S-4-iii
None
14. Cybrids may arise through the
15. Match the disease with causative organism and affected crop
Disease .....................Causative organism .....................Crop P. Powdery mildew ..1. Albugo candida ..........................i. Corn Q. White rust ..........2. Phytophthora infestans ..............ii. Tomato R. Downy mildew ....3. Erysiphe orontii .........................iii. Potato S. Late blight ..........4. Peronoscleropora phillippinensis..iv. Mustard
P-3-ii, Q-1-iv, R-4-i, S-2-iii
P-4-ii, Q-1-i, R-3-iv, S-2-iii
P-3-i, Q-1-iv, R-2-iii, S-4-ii
P-2-iii, Q-3-ii, R-1-iv, S-4-i
None
16. Match the options in Group I with that of Group II with respect to steps in signal transduction mechanism in plants
Group I .....................................................Group II P. Phospholipase C .......1. stimulates release of calcium from intracellular stores Q. Inositol triphosphate ..2. regulates ion channels/activates various enzymes R. Diacylglycerol ...........3. hydrolyzes posphatidylinositol bisphosphate (PIP2) S. Phosphatidic acid ......4. phosphorylated to phosphatidic acid
P-4, Q-3, R-2, S-1
P-3, Q-4, R-2, S-1
P-3, Q-1, R-4, S-2
P-2, Q-3, R-1, S-4
None
17. Which one of the following statements is CORRECT with respect to endosperm development? It originates
18. Which one of the following methods is INCORRECT with respect to haploid plant production? It can be produced
2 out of 2