Life Sciences Unit Test

Front

What is the carbon dioxide-oxygen cycle?

Back

The carbon dioxide-oxygen cycle is the process by which plants take in carbon dioxide from the air and release oxygen through photosynthesis, while animals take in oxygen and release carbon dioxide through respiration.

Front

What do plants need to grow?

Back

Plants need sunlight, water, air, and nutrients to grow. Soil is not always necessary, especially in hydroponic systems.

Front

How do plants and animals differ in obtaining energy?

Back

Unlike animals, plants are able to make their own food through photosynthesis, using sunlight, carbon dioxide, and water.

Front

What happens to a food web if one species decreases?

Back

If a species decreases, it can affect the entire food web, as other species that rely on it for food may struggle to survive.

Front

What should be added to hydroponic plants' water?

Back

Nutrients should be added to the water in hydroponic systems to support plant growth.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and helping to recycle materials in the ecosystem.

Front

What is the importance of sunlight for plants?

Back

Sunlight is essential for photosynthesis, allowing plants to produce their own food and oxygen.

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including its movement through the atmosphere, soil, and living organisms.

Front

What are producers in an ecosystem?

Back

Producers are organisms, like plants, that can make their own food through photosynthesis and serve as a food source for other organisms.