All the cytokinins are
All the cytokinins are
Options
(a) Acidic (b) Aminopurines (c) Phenol (d) Glucosides
Correct Answer:
Aminopurines
Explanation:
Gibberellic acid is mainly related with elongation of plant.
Plant Growth and Development
In which of the following respect the plant hormones differ from enzymes
In which of the following respect, the plant hormones differ from enzymes
Options
(a) Required in less quantity (b) They are expended in the process (c) They release some energy (d) None of […]
Distribution of growth in a root by marking it at equal intervals with Indian
Distribution of growth in a root by marking it at equal intervals with Indian ink was originally studied by
Options
(a) Wellensick (b) Strasburger (c) Went (d) Nitsch
Correct Answer:
Strasburger
Explanation:
Measurement of […]
In lag phase the growth is
In lag phase, the growth is
Options
(a) Slowest (b) Fastest (c) Intermediate (d) No growth at all
Correct Answer:
Slowest
Explanation:
It represents initial stage of growth. The rate of growth […]
If a tree flowers thrice in a year October January and July in Northern India
If a tree flowers thrice in a year (October, January and July) in Northern India, it is said to be
Options
(a) Photosensitive but thermo-insensitive (b) Thermosensitive but photo-insensitive (c) Photo and thermo-insensitive […]
IAA and serotonin are derived formed from which of the following
IAA and serotonin are derived (formed) from which of the following
Options
(a) Tryptophan (b) Tyrosine (c) Phenylalanine (d) None of these
Correct Answer:
Tryptophan
Explanation:
Natural auxins are synthesized in physiologically active […]
Growth is
Growth is
Options
(a) Unidirectional backward (b) Reversible (c) Unidirectional forward (d) None of the above
Correct Answer:
Unidirectional forward
Explanation:
Because growth is a irreversible process.
Gibberellins were first discovered in fungal genus
Gibberellins were first discovered in fungal genus
Options
(a) Mucor (b) Rhizopus (c) Agaricus (d) Fusarium
Correct Answer:
Fusarium
Explanation:
GA Ist discovered form Gibberella fujikuroi (Fusarium moniliforme) which is of ascomycetous fungus.
Fruit and leaf drop at early stages can be prevented by the application of
Fruit and leaf drop at early stages can be prevented by the application of
Options
(a) Gibberellic acid (b) Cytokinins (c) Ethylene (d) Auxins
Correct Answer:
Auxins
Explanation:
Auxins prevent premature leaf and […]
For germination of seed which light is necessary
For germination of seed, which light is necessary
Options
(a) Red light (b) Green light (c) Far-red light (d) Blue light
Correct Answer:
Green light
Explanation:
Red light of 660 nm stimulates germination […]