A long-day plant with a critical dark period of 9 hours is grown under short-day conditions. Which treatment is MOST LIKELY to induce flowering?
Increasing the ambient temperature during the dark period.
Spraying the plant with gibberellins during the light period.
Interrupting the dark period with a brief exposure to red light.
Exposing the plant to far-red light at the end of the dark period.
Related Questions
The flowers of Oxalis open during the day and close at night, such type of movement is
Photonasty
Nyctinasty
Phototactic
Seismonastic
Which part of the plant perceives the photoperiod required for flowering?
Leaves
Roots
Stem
Flowers
Which of the following is NOT influenced by photoperiodism?
Flowering
Formation of storage organs
Leaf fall
Seed germination
Which one is short day plant?
Brassica compestris
Raphanus sativus
Glycine max
Papaver somniferum
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
Phytochrome, the photoreceptor involved in flowering, is primarily located in which plant organ?
Roots
Stem
Leaves
Flowers
Which of the following best describes photoperiodism?
The response of plants to the intensity of light.
The response of plants to the quality of light.
The response of plants to gravity.
The response of plants to the length of day and night.
Which of the following is a day neutral plant?
Helianthus annuus
Euphorbia pulcherrima
Avena sativa
Beta vulgaris
Which pigment involves in photoperiodic change in plants?
Phytochrome
Cytochrome
Chlorophyll
Anthocyanin
What is the site of perception of photoperiod necessary for induction of flowering in plants?
Lateral buds
Pulvinus
Shoot apex
Leaves
