Study Guide Unit 2.1-3: Matter in Ecosystems

An animal who hunts and kills its own food is called a(n) _____.

• predator
• scavenger
• producer
• omnivore

Which of the following are located on a plant's leaves?

• stomata
• xylem
• phloem
• roots

Predators hunt ___________ and help control the size of the populations of these organisms.

• Prey

• consumers

• producers

• decomposers

Plants need sunlight, carbon dioxide, water, and space are known as _________ which help plants live and grow?

• growing period

• producers

• basic needs

• roots

The main job of the ________ is to take in nutrients and water from the soil.

• xylem
• phloem
• stomata
• roots

____ is the evaporation of water from a plant's leaves.

• transpiration
• storage
• water absorption
• nutrient evaporation

People can help nature recycle plant material by composting. People use compost in their gardens. How does placing compost in your garden improve the natural environment?

• It makes the soil harder.
• It makes the soil unusable.
• It helps keep insects away.
• It makes the soil rich in nutrients.

Which of the following materials used by plants to make food can be found in the air?

• pollen
• soil
• oxygen
• carbon dioxide

Water is carried from the roots through the stem by tissues called __________.

• phloem

• xylem

• roots

• stomata

Plants cannot grow too close together because their ____ need to spread out and absorb nutrients from the soil.

• stem
• roots
• petals
• xylem