Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
How many molecules of ATP and NADPH are required, respectively, for fixation of every CO2 molecule entering the Calvin cycle?
In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as
Which one of the following pairs is not correctly matched?
Fruit and leaf drop at early stages can be prevented by the application of:
The plant hormone used to destroy weeds in a field is:
Which hormone is used to induce immediate stomatal closure in leaves?
What is the site of perception of photoperiod necessary for induction of flowering in plants?
Which of the following PGR is present in coconut milk which is used in tissue culture?
"Foolish seedling" disease of rice led to the discovery of:
Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin
It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
Which of the following is not an inhibitory substance governing seed dormancy?
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
The living differentiated cells, that lost the capacity to divide anymore, can regain the capacity of division under certain conditions. This phenomenon is termed as:
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:
Seed dormancy is due to:
The maximum growth rate occurs in:
What is necessary for ripening of fruits:
Given below are some statements about plant growth regulators. Which of the following is incorrect?
Cell elongation in internodal regions of the green plants takes place due to: