Unit 2 Science Test Review

What part of a plant absorbs water?

• stem

• leaves

• flower

• roots

What structure contains a young plant and it surrounded by a protective coat?

• nutrients

• seed

• photosynthesis

• stem

Without _______, there would not be life on Earth.

• water

• photosynthesis

• animals

• heat

causes stems to wilt. ​ (a)  

• seeds
• oxygen
• heat
• roots

Gravity causes roots to grow ________

• sideways

• zig zag

• upward

• downward

Why do plants grow towards windows?

• Plants grow toward sunlight

• Plats grow toward gravity

• Plants grow towards the cold

• Plants grow towards the wind

What does a plant need to make its own food?

• sunlight, carbon dioxide, water

• sunlight, water, oxygen

• carbon dioxide, water, oxygen

• soil, water, sunlight

Where do plants get most of their energy from?

• food

• water

• sunlight

• animals

Animals and humans require _____ to live.

• carbon dioxide

• oxygen

• photosynthesis

• candy

Can a plant grow well inside of a dark room?

• No

• Yes