A plant species exhibits a critical dark period of 14 hours. Which of the following light/dark regimes would MOST LIKELY prevent flowering?
10 hours light / 10 hours dark
14 hours light / 10 hours dark
10 hours light / 14 hours dark
15 hours light / 9 hours dark
Related Questions
What helps in flowering?
Cytochrome
ABA
Phytochrome
Ethylene
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 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.
A plant have 13 hours critical day light under which condition it will flower
Duration of light Duration of dark
period period
13 11
11 13
12 12
10 14
Which part of the plant perceives the photoperiod required for flowering?
Leaves
Roots
Stem
Flowers
A phytohormone, which increases the production of starch hydrolyzing enzymes during the germination of maize seeds, is employed for the following
Production of malt
Delayed ripening of fruits
Promoting bolting in beet
Thinning of cotton, cherry and walnut
Coiling of garden pea tendrils around any support is an example of
Thigmotaxis
Thigmonasty
Thigmotropism
Thermotaxis
Phytochrome, the photoreceptor involved in flowering, is primarily located in which plant organ?
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
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
