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.
Related Questions
With respect to photoperiodism, these are long day plants.
Plants that flower when the light period exceeds a critical length
Plants that flower when the dark period exceeds a critical length
Plants that flower regardless of the light period
Plants that flower when the temperature exceeds a critical threshold
With respect to photoperiodism, these are long day plants.
Wheat, oat, soybean
Wheat, Xanthium, paddy
Wheat, poppy, soybean
Wheat, poppy, beet
Which of the following is NOT influenced by photoperiodism?
Flowering
Formation of storage organs
Leaf fall
Seed germination
If a plant need 10 hours darkness than identify the condition under which it will flower
I. 14 hours day period
II. 10 hours dark period
III. 91/2 hours dark period
IV. 9 hours dark period
Choose the correct option
I and II only
II and III only
I, II, and III only
I, II, III, and IV
Photoperiod was first observed in
Potato
Maryland mammoth
Four O’clock
Evening primrose
Response of plants due to reversible turgor change in pulvinus is
Nyctinastic
Seismonastic
Heptonastic
Photonastic
Which of the following is a day neutral plant?
Helianthus annuus
Euphorbia pulcherrima
Avena sativa
Beta vulgaris
Opening of floral buds into flowers, is a type of
Autonomic movement of locomotion
Autonomic movement of variation
Paratonic movement of growth
Autonomic movement of growth
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
