Photosynthesis Quiz

What do plants take in from the air for photosynthesis?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

What is the role of water in photosynthesis?

• It is a byproduct

• It is a reactant

• It is a catalyst

• It is an inhibitor

Through which part of the plant does carbon dioxide enter?

• Xylem

• Phloem

• Stomata

• Chlorophyll

What splits water molecules into hydrogen and oxygen during photosynthesis?

• Chlorophyll

• Sun's energy

• Stomata

• Phloem

Which part of the plant absorbs water from the soil?

• Leaves

• Roots

• Stomata

• Phloem

What is the process called where plants make their own food using sunlight?

• Respiration

• Digestion

• Photosynthesis

• Fermentation

What do chloroplasts contain?

• Mitochondria

• Ribosomes

• Grana

• Lysosomes

Approximately how many chloroplasts can be found in a single square millimeter of a green leaf?

• 1,000

• 10,000

• 100,000

• 500,000

What do chloroplasts do when a plant is attacked by a pathogen?

• They produce toxins

• They produce enzymes

• They produce antibodies

• They produce hormones

What is the main role of chloroplasts in plants?

• To store nutrients

• To absorb sunlight

• To transport water

• To protect from insects