Why does photosynthesis not occur in most plants at night?
Answer and explanation
Correct answer: Light is not available
The governing concept is the light-dependent requirement of photosynthesis. Chlorophyll absorbs light energy, which powers the reactions that produce energy-rich molecules and ultimately helps convert carbon dioxide and water into glucose and oxygen. At night, sunlight is absent, so these light-driven reactions usually stop in most plants. Water and xylem do not suddenly disappear, and chlorophyll is not always destroyed. Thus option A is correct.
Frequently asked questions
What is the correct answer to this question?
Light is not available
Why is this the correct answer?
The governing concept is the light-dependent requirement of photosynthesis. Chlorophyll absorbs light energy, which powers the reactions that produce energy-rich molecules and ultimately helps convert carbon dioxide and water into glucose and oxygen. At night, sunlight is absent, so these light-driven reactions usually stop in most plants. Water and xylem do not suddenly disappear, and chlorophyll is not always destroyed. Thus option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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