7th Grade Unit 2 Test

What is the primary function of photosynthesis in plants?

• To produce oxygen

• To convert sunlight into chemical energy

• To absorb water

• To release carbon dioxide

Which of the following is a product of photosynthesis?

• Carbon dioxide

• Water

• Glucose

• Nitrogen

During photosynthesis, plants take in carbon dioxide and release which gas?

• Oxygen

• Nitrogen

• Hydrogen

• Methane

Which part of the plant is primarily responsible for photosynthesis?

• Roots

• Stem

• Leaves

• Flowers

What is the main pigment involved in photosynthesis?

• Hemoglobin

• Chlorophyll

• Melanin

• Carotene

Explain how photosynthesis contributes to the flow of energy in an ecosystem.

Describe the role of chlorophyll in photosynthesis.

How does the process of photosynthesis affect the levels of carbon dioxide and oxygen in the atmosphere?

What is the chemical equation for photosynthesis?

Which of the following best describes the process of cellular respiration?

• Conversion of glucose into energy

• Absorption of sunlight

• Production of glucose

• Release of oxygen