Photosynthesis

What are the reactants in photosynthesis?

• Oxygen + carbon dioxide

• Oxygen + glucose

• Glucose + water

• Carbon dioxide + water

What are the products of photosynthesis?

• Carbon dioxide + glucose

• Glucose + oxygen

• Oxygen + water

• Water + glucose

Photosynthesis is an endothermic reaction.

• True

• False

Which type of energy is required for photosynthesis to occur?

• Heat energy

• Light energy

• Sound energy

• Thermal energy

Which of the following are limiting factors of photosynthesis? Check all that apply.

• Oxygen

• Carbon dioxide

• Light intensity

• Temperature

Where do plants get the carbon dioxide needed for photosynthesis?

• Water

• Lungs

• The stem

• The air

How does carbon dioxide enter the plant?

• Hairs on the roots

• The outer layer of the stem

• Stomata in the leaves

Which cells absorb the water needed for photosynthesis?

• Stomata

• Phloem

• Sickle

• Root hair

Plants produce glucose in photosynthesis. Tick the options that best describe how the plants then use this glucose.

• Respiration to release energy.

• Storing as starch

• Storing as fats and oils

• Converting into cellulose for cell walls

Which substance is used to test for the presence of starch in leaves?

• Iodine

• Benedict's

• Biuret

• Ethanol