21. Determine the correctness or otherwise of the following Assertion [A] and the Reason [R].
Assertion [A]: A zygote and its immediate descendant cells are unspecialized and are called totipotent.
Reason [R]: Totipotent cells retain the capacity to differentiate into only a few cell types.
Assertion [A]: A zygote and its immediate descendant cells are unspecialized and are called totipotent.
Reason [R]: Totipotent cells retain the capacity to differentiate into only a few cell types.
22. Plant secondary metabolites
23. Determine the correctness or otherwise of the following Assertion (A) and Reason (R).
Assertion: The production of secondary metabolites in plant cell cultures is enhanced by the addition of elicitors.
Reason: Elicitors induce the expression of enzymes responsible for the biosynthesis of secondary metabolites.
Assertion: The production of secondary metabolites in plant cell cultures is enhanced by the addition of elicitors.
Reason: Elicitors induce the expression of enzymes responsible for the biosynthesis of secondary metabolites.
24. When present in tissue culture medium, gibberellin
25. Callus formation from mature tissue explant occurs through
26. Identify the natural plant growth regulators from the following list.
P. Zeatin
Q. Benzylaminopurine (BAP)
R. Indole-3-acetic acid (IAA)
S. 2, 4-Dichlorophenoxyacetic acid
P. Zeatin
Q. Benzylaminopurine (BAP)
R. Indole-3-acetic acid (IAA)
S. 2, 4-Dichlorophenoxyacetic acid
27. Which one of the following is the growth factor used for growth of tissues and organs in plant tissue culture?
28. Match the promoters Listed in Group I with the tissues listed in Group II
Group I
Group II
P. α-Amylase
1. Endosperm
Q. Glutenin
2. Tuber
R. Phaseollin
3. Aleurone
S. Patatin
4. Cotyledon
Group I | Group II |
P. α-Amylase | 1. Endosperm |
Q. Glutenin | 2. Tuber |
R. Phaseollin | 3. Aleurone |
S. Patatin | 4. Cotyledon |