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Why does a flower wilt after it has been pollinated?
It wilts because it is not longer needed for the process of reproduction
What structure allows angiosperms to reproduce on dry land?
Pollen grains do not require water for reproduction
What is the function of the spongy layer?
Its function is to store excess gases. Secondary site of photosynthesis.
What is auxin?
It is a plant hormone that stimulates growth of new cells in the tips of the roots and stem
What is the function of the upper and lower epidermis?
The upper and lower epidermis protect the internal structures of the leaf
What is the function of the root hairs?
To increase the surface area of the root so it can absorb more water
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