LS1.9 and LS2.1 Study Guide

Front

What is the importance of the CO2/O cycle to animals?

Back

It provides a gas they take in when breathing.

Front

What type of organism gets its energy directly from the Sun?

Back

Producer.

Front

How can organisms be best defined?

Back

Living things.

Front

Why is photosynthesis important?

Back

It creates oxygen for animals to breathe, creates energy for heterotrophs to use, and creates food for plants to use.

Front

What does an 'exchange of gases' mean?

Back

It means that humans and plants trade gases back and forth.

Front

What is photosynthesis?

Back

The process by which plants use sunlight to synthesize foods from carbon dioxide and water.

Front

What are producers in an ecosystem?

Back

Organisms that produce their own food, primarily through photosynthesis.

Front

What role do consumers play in an ecosystem?

Back

They obtain energy by consuming other organisms.

Front

What is a decomposer?

Back

An organism that breaks down dead or decaying organisms, returning nutrients to the soil.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is the green pigment in plants that absorbs sunlight for photosynthesis.