Photosynthesis and Energy in Plants

What is the primary source of energy for animals?

• Water

• Carbon dioxide

• Sunlight

• Food

How do plants primarily obtain the energy they need?

• By consuming other organisms

• Through photosynthesis using sunlight

• Through respiration

• By absorbing nutrients from the soil

What pigment in plants is responsible for absorbing sunlight?

• Anthocyanin

• Chlorophyll

• Carotene

• Xanthophyll

Which gas is absorbed by plants during photosynthesis?

• Nitrogen

• Methane

• Carbon dioxide

• Oxygen

What are the products of the photosynthesis process?

• Glucose and oxygen

• Water and carbon dioxide

• Sunlight and chlorophyll

• Nitrogen and methane

Why is photosynthesis crucial for plant growth?

• It allows plants to produce glucose for energy

• It provides plants with water

• It enables plants to reproduce

• It helps plants absorb minerals

What is the greenhouse effect primarily caused by?

• Excess oxygen in the atmosphere

• High levels of nitrogen

• Increased levels of carbon dioxide

• Depletion of the ozone layer

What term is used to describe environments that remove a lot of carbon dioxide from the atmosphere?

• Carbon reservoirs

• Carbon sinks

• Carbon emitters

• Carbon sources

Why are forests considered important for the environment?

• They provide shelter for animals

• They are a source of timber

• They act as carbon sinks and produce oxygen

• They prevent soil erosion

What is one reason for the need to protect forests?

• Forests are used for recreational activities

• Forests help in photosynthesis which benefits the environment

• Forests are home to many endangered species

• Forests are a source of food