11. Plant breeders have an advantage over animal breeders in reproducing a desired type offspring because the plant breeders can employ
12. For protoplast fusion to be successful in plant cells
13. Meristems escape virus invasion because
14. Which of the following would result in somaclonal variation in micropropagated plants?
P. Propagation by axillary branching in the absence of plant growth regulators.
Q. Cell suspension maintained for five years before induction of somatic embryogenesis.
R. Callus induction using 20 μM 2, 4-dichlorophenoxyacetic acid followed by shoot organogenesis.
S. Shoot organogenesis from an explant in the absence of an intermediate callus phase.
P. Propagation by axillary branching in the absence of plant growth regulators.
Q. Cell suspension maintained for five years before induction of somatic embryogenesis.
R. Callus induction using 20 μM 2, 4-dichlorophenoxyacetic acid followed by shoot organogenesis.
S. Shoot organogenesis from an explant in the absence of an intermediate callus phase.
15. Somatic embryo from cotyledon explant would develop in the following sequential stages
16. Determine the correctness or otherwise of the following Assertion (A) and the Reason (R).
Assertion: It is possible to regenerate a whole plant from a single plant cell.
Reason: It is easier to introduce transgenes into plants than animals.
Assertion: It is possible to regenerate a whole plant from a single plant cell.
Reason: It is easier to introduce transgenes into plants than animals.
17. Which one of the following is not a protoplast fusion inducing agent?
18. Match the plant hormones in Group I with functions in Group II.
Group I
Group II
P. Gibberellic acid
1. Seed and bud dormancy
Q. Zeatin
2. Fruit ripening
R. Ethylene
3. Delaying leaf senescence
S. Abscisic acid
4. Regulation of plant height
| Group I | Group II |
| P. Gibberellic acid | 1. Seed and bud dormancy |
| Q. Zeatin | 2. Fruit ripening |
| R. Ethylene | 3. Delaying leaf senescence |
| S. Abscisic acid | 4. Regulation of plant height |