Which plant hormone promotes seed dormancy, bud dormancy and causes stomatal closure?
IAA
Abscisic acid
GA
cytokinin
Related Questions
Search for natural cytokinin lead to the
Isolation of zeatin from corn kernels
Isolation of zeatin from coconut milk
Isolation of zeatin from sugarcane
Both (1) and (2)
How does pruning help in making the hedge dense?
It induces the differentiation of new shoots from the rootstock
It frees axillary buds from apical dominance
The apical shoot grows faster after pruning
It releases wound hormones
Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin:
does not affect monocots
stimulates growth of monocots
inhibits growth of monocots
is not absorbed by monocots
Natural cytokinins are synthesized in tissue that are
Senescent
Dividing rapidly
Storing food material
Differentiating
Micropropagation is done by
Auxins
GA
Cytokinin
Both (1) and (3)
Which of the following is the effect of a plant hormone, which is synthesized more in the absence of light?
Inhibits the development of seedless fruits
Responsible for closing of stomata
Induces the dormancy of seeds
Length of internodes increases
The hormone present in the liquid endosperm of coconut is
Cytokinin
Gibberellins
Ethylene
auxin
Flowering in pineapple plants is slow. Farmers want to increase yield by promoting flowering throughout the year. Which plant hormones could achieve this?
Auxins and Ethylene
Gibberellins and Cytokinins
Abscisic acid and Cytokinins
Gibberellins and Abscisic acid
Which hormone promotes bolting in rosette plants?
Ethylene
Auxin
Gibberellin
Abscisic acid
Internodal elongation just prior to flowering in beet, cabbage and in many plants with rosette habit is called
Bolting
Anthesis
Vernalization
Photoperiodism
