Plants：练习题

What do most plants need from the Sun to help them grow?

What is the main function of a plant's stem?

Imagine a plant is kept in a dark cupboard for two weeks without any light. What is most likely to happen?

Which part of a plant is usually found under the ground and takes in water?

Which part of the plant is often brightly colored to attract insects?

Which part of a plant is usually found under the soil and helps the plant take in water?

How do the leaves of a plant help it to survive?

Look at the parts of a plant and answer the following questions.
a) Name the part of the plant that grows underground and absorbs water.
b) Name the part that holds the plant upright and carries water to the leaves.
c) Name the part where the plant makes its own food.

A seed needs certain conditions to grow into a healthy plant.
a) List three things a seed needs to germinate (start growing).
b) Does a seed need sunlight to start germinating underground? Explain why or why not.
c) Once the plant has leaves, why does it then need sunlight?