Question

Plants contain the carbohydrates starch and cellulose. In the spring when stem growth is at its fastest rate, cellulose production rates are increased in some plants. In the months with less sunlight, the level of starch decreases in some plants. What does this information demonstrate?

Answer 1

Answer:

This gives the information that starch and glucose both are carbohydrate but their biological functions in plants are different.

Explanation:

• Cellulose is a polysaccharide which is used to produce cell walls in plant cells. The cell of growing stems have high amount of cellulose in cell walls.
• This is the reason that the concentration of cellulose lowers in period of stem growth.
• Starch is polysaccharide which is used in production of energy. It is mainly produced in high sun light while consumed more in low sun light.
• The lower concentration of starch in less sun light can explain its energy production role in plants during winters.

Answer 2

This information demonstrate that the quantity of sunlight a plant is exposed to determines the amount of sugar (cellulose) that would be produced.

The process by which green plants manufacture their own food is through photosynthesis.

This process makes use of inorganic substances such as sunlight and carbondioxide to produce organic substances such as sugar (cellulose).

During spring, there is increase in sunlight making energy available for the process of photosynthesis.

In months with less sunlight, the level of starch decreases because the light dependent stage of photosynthesis is affected.

Therefore, this information demonstrate that the quantity of sunlight a plant is exposed to determines the amount of sugar (cellulose) that would be produced.

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