Which pigment is primarily responsible for absorbing light in the context of photoperiodism?
Chlorophyll a
Chlorophyll b
Carotenoids
Phytochrome
Related Questions
What is the site of perception of photoperiod necessary for induction of flowering in plants?
Lateral buds
Pulvinus
Shoot apex
Leaves
Which statement is false regarding the role of leaves in photoperiodism?
Leaves contain photoreceptors called phytochromes.
Light perception by leaves is essential for photoperiodism.
Leaves transmit signals related to day length.
Leaves directly induce flowering.
The critical period in photoperiodism refers to the:
Minimum or maximum length of uninterrupted darkness required for flowering
Duration of light exposure needed for photosynthesis
Total length of the day-night cycle
Specific time of day when light is most effective
What is the site of perception of photoperiod necessary for induction of flowering in plants?
Lateral buds
Pulvinus
Shoot apex
Leaves
Which of the following is NOT influenced by photoperiodism?
Flowering
Formation of storage organs
Leaf fall
Seed germination
A plant is exposed to varying light durations. Which plant part is primarily responsible for sensing these changes and initiating the photoperiodic response?
Roots
Stem
Leaves
Flowers
Which of the following is NOT a commercial application of understanding photoperiodism?
Producing out-of-season flowers
Controlling the flowering time of crops
Developing uniform flowering in plants
Increasing the size of individual fruits
Which one is short day plant?
Chrysanthemum
Lettuce
Spinach
Radish
Importance of day length in flowering of plants was first shown in
Lemna
Tobacco
Cotton
Pentunia
Phytochrome is involved in many plant responses besides flowering. Which of the following is NOT a known role of phytochrome?
Seed germination
Shade avoidance response
Regulation of stomatal closure
Photomorphogenesis
