Plants are one of the few kinds of living things that can change light energy into ___

• electricity
• elastic energy
• chemical energy
• gravitational energy

The process plants use to turn light energy into chemical energy is called ___

• respiration
• photosynthesis
• digestion
• light amplification

A drawing or figure used to help explain something is called ___

• a diagram
• a road map
• a photograph
• an icon

What is the smallest basic unit of a living thing?

• the cell
• the tissue
• the organ
• the atom

Plant cells contain a green colored chemical called ___

• chlorofluorocarbons
• chlorophyll
• carbon dioxide
• DNA

Chlorophyll, in plant cells, is found in special mini-containers called ___

• vacuoles
• chloroplasts
• cell walls
• mitochondrion

What is the energy source for the process of photosynthesis?

• electricity from the ground
• electricity from the Sun
• light energy from the Sun
• gravity from the Earth

What two substances are required for photosynthesis?

• water and oxygen
• oxygen and carbon dioxide
• water and carbon dioxide
• carbon dioxide and sugar

Photosynthesis changes light energy into chemical energy, which is stored in the form of ___

• fat
• sugar
• carbon dioxide
• water

During photosynthesis, which gas is released into the air?

• carbon monoxide
• nitrogen
• carbon dioxide
• oxygen