Question

question 14 (5.555555556 points)
a plant produces glucose through photosynthesis during the day. how does this glucose contribute to the plants survival during nighttime when photosynthesis cannot occur?
glucose is broken down through cellular respiration to provide energy
glucose is stored unchanged until morning when photosynthesis can resume
glucose is converted back into light energy that the plant can use internally
glucose combines with oxygen to produce water needed for cellular processes

Explanation:

• For the option "Glucose is broken down through cellular respiration to provide energy": Plants need energy at night. Cellular respiration breaks down glucose (produced via photosynthesis) to release ATP (energy) for vital processes like metabolism, growth, and repair. This is correct.
• For "Glucose is stored unchanged until morning when photosynthesis can resume": Glucose is usually converted to starch for storage, not stored as glucose. So this is incorrect.
• For "Glucose is converted back into light energy that the plant can use internally": Light energy is from the sun, and glucose can't be converted back to light energy. Plants use chemical energy from glucose breakdown. So this is incorrect.
• For "Glucose combines with oxygen to produce water needed for cellular processes": The reaction of glucose and oxygen in cellular respiration produces carbon dioxide, water, and energy. But the main purpose of breaking down glucose is energy production, not just water production. Also, the description of the purpose (to get water) is inaccurate as water is a by - product, not the main goal. So this is incorrect.

Answer:

A. Glucose is broken down through cellular respiration to provide energy