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Fill in the blanks (a, b, c and d) in the following statements with a proper combination of m, n o and p.
Wherein m represents - longer
n represents - shorter
o represents - prevents
p represents - induces
Short day (SD) plants flower when night lengths are a than a critical dark period. Interruption of the dark period by a brief light treatment b flowering in SD plants. Long day (LD) plants flower when night length is c than a critical period. Shortening of the night with a brief light treatment d flowering in LD plants.
- a)a - m, b - o, c - n, d - p
- b)a - n, b - p, c - m, d - o
- c)a - n, b - o, c - m, d - p
- d)a - m, b - p, c - n, d - o
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Fill in the blanks (a, b, c and d) in the following statements with a ...
Concept:
- Plants' reaction to intervals of light and darkness is called photoperiodism.
- To begin flowering, some plants need a particular ratio of light and darkness.
- Certain physiological processes depend on how long the light and dark phases are relative to one another.
- The seasons of light and darkness are sensed by leaves.
- A hormonal substance is created that starts blooming when a plant receives the proper quantity of photoperiod, which is required to trigger flowering.
- The hormone causes flowering at the shoot apices after being delivered there.
Explanation:The plants can be divided into three groups based on how much darkness and light are needed. As follows
- Long-day plants:
- When the length of the night falls below their essential photoperiod, long-day plants bloom.
- As the days become longer, these plants often flower in late spring or early summer.
- The longest day of the year (summer solstice) falls on or around June 21 in the northern hemisphere.
- After that day, the days get shorter (and the nights get longer) until the winter solstice on December 21.
- Long Day Flowers:
- For long-day plants to flower, they need light that is well above the essential photoperiod.
- They typically bloom in the early summer and late spring, or any other time of year with long days.
- While facultative long day plants flower in any photoperiod, flowering occurs more quickly under a certain photoperiod, obligate long day plants strictly only flower when the plant is exposed to the required photoperiod.
- Short Day Plants:
- When the night durations are longer than their essential photoperiod, short-day plants bloom.
- They require a sustained period of darkness before floral growth can start; they cannot flower during short nights or if a pulse of artificial light is shined on the plant for few minutes throughout the night.
- Moonlight and lightning are examples of natural nighttime light, but neither is bright enough or long enough to stop blossoming.
- Generally speaking, short-day (also known as long-night) plants bloom after June 21 in the northern hemisphere, which is in the summer or autumn.
- Different species and variants of a species have different requirements for the length of the dark period needed to trigger flowering.
- By causing the shoot to develop floral buds instead of leaves and lateral buds, photoperiodism impacts blooming.
-
- Short Day flowers:
- A continuous period of darkness is necessary for flowering in the short day plants.
- The facultative short day plants flower in any photoperiod, however flowering is more rapid during a specific dark period.
- In contrast, the obligate short day plants strictly only flower when the necessary dark period is present.
- Various plants have different requirements for the length of the dark time before flowering.
- African marigold and hyacinth bean (Lablab purpureus) are examples of short-day obligatory plants (Tagetes erecta)
- Rice, soybeans (Glycine max), cotton (Gossypium), and short-day facultative plants (Oryza).
Hence the correct answer is option 1.
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Fill in the blanks (a, b, c and d) in the following statements with a proper combination of m, n o and p. Wherein m represents - longer n represents -shorter o represents - prevents p represents - induces Short day (SD) plants flower when night lengths are a than a critical dark period. Interruption of the dark period by a brief light treatment b flowering in SD plants. Long day (LD) plants flower when night length is c than a critical period. Shortening of the night with a brief light treatment d flowering in LD plants.a)a - m, b - o, c - n, d - pb)a - n, b - p, c - m, d - oc)a - n, b - o, c - m, d - pd)a - m, b - p, c - n, d - oCorrect answer is option 'A'. Can you explain this answer?
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Fill in the blanks (a, b, c and d) in the following statements with a proper combination of m, n o and p. Wherein m represents - longer n represents -shorter o represents - prevents p represents - induces Short day (SD) plants flower when night lengths are a than a critical dark period. Interruption of the dark period by a brief light treatment b flowering in SD plants. Long day (LD) plants flower when night length is c than a critical period. Shortening of the night with a brief light treatment d flowering in LD plants.a)a - m, b - o, c - n, d - pb)a - n, b - p, c - m, d - oc)a - n, b - o, c - m, d - pd)a - m, b - p, c - n, d - oCorrect answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Fill in the blanks (a, b, c and d) in the following statements with a proper combination of m, n o and p. Wherein m represents - longer n represents -shorter o represents - prevents p represents - induces Short day (SD) plants flower when night lengths are a than a critical dark period. Interruption of the dark period by a brief light treatment b flowering in SD plants. Long day (LD) plants flower when night length is c than a critical period. Shortening of the night with a brief light treatment d flowering in LD plants.a)a - m, b - o, c - n, d - pb)a - n, b - p, c - m, d - oc)a - n, b - o, c - m, d - pd)a - m, b - p, c - n, d - oCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Fill in the blanks (a, b, c and d) in the following statements with a proper combination of m, n o and p. Wherein m represents - longer n represents -shorter o represents - prevents p represents - induces Short day (SD) plants flower when night lengths are a than a critical dark period. Interruption of the dark period by a brief light treatment b flowering in SD plants. Long day (LD) plants flower when night length is c than a critical period. Shortening of the night with a brief light treatment d flowering in LD plants.a)a - m, b - o, c - n, d - pb)a - n, b - p, c - m, d - oc)a - n, b - o, c - m, d - pd)a - m, b - p, c - n, d - oCorrect answer is option 'A'. Can you explain this answer?.
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