Biology Topic Practice

Storage of Glucose as Starch

Plants often produce more glucose than they need immediately, so they store it for later use.

Why don't plants just store glucose as it is?

What is Storage of Glucose as Starch?

"Starch is a complex carbohydrate used by plants as an insoluble energy storage molecule."

Question 1

One use of glucose made in photosynthesis is:

Question 2

On a very hot, bright day, the rate of photosynthesis might actually slow down. Why?

Question 3

Choose the correct answer: which change would usually increase the rate of photosynthesis if light intensity is the limiting factor?

Question 4

GCSE Biology: One use of glucose made in photosynthesis is:

Starch Storage

Glucose is soluble and would affect osmosis in cells.

Starch is insoluble and can be packed tightly into storage organs.

Starch can be converted back to glucose when the plant needs energy (e.g., at night).

Exam Tip

You can test for the presence of starch in a leaf using iodine solution.

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