Week 24 Science

Plants need air, sunlight, water, and nutrients to

• drop their leaves

• stay alive and healthy

• protect themselves against animals

• attract insects to help them

Nutrients are used to

• keep the plant healthy

• provide food for the plant

• help the plant take in water

• create oxygen for the plant

Which plant structure supports the plant so it does not fall over?

• seed

• root

• leaf

• flower

One function of a plant stem is to

• produce food for the plant to use

• provide a space for insects to live

• take in water and nutrients from the soil

• hold up the leaves to absorb sunlight

What function do both the stem and roots share?

• They both hold up the leaves of the plant.

• They both take in water and nutrients from the soil.

• They both capture light to make food.

• They both support the plant to keep it from falling over.

This plant structure is stiff, thin, sharp, and protects the plant from animals.

• spine leaf

• stem

• root hairs

• vascular system

How do roots take in water and nutrients from the soil?

• by opening their leaves

• by using their root hairs

• through photosynthesis

• using their stem to anchor the plant

Where is a plant's food made?

• roots

• leaves

• stem

• spine

What is the purpose of the tubes that run through the roots and stems of most plants?

• to allow water to flow through the plant

• to let the plant breathe

• to make the plant stand up

• to make the plant look better

What is the main function of the stem of a cactus?

• create sugar during photosynthesis

• protection when it rains

• store water for the plant

• take in nutrients from the soil