Year 8 plants and photosynthesis

Q1. Which part of a plant cell absorbs energy from sunlight?

• Cell Membrane

• Nucleus

• Chloroplast

• Mitochondria

Q2. Select the substances a plant needs to do photosynthesis

• Water

• Carbon Dioxide

• Oxygen

• nitrogen

• Glucose

Q3 Select all the substances plants make during photosynthesis

• Water

• Carbon Dioxide

• Oxygen

• Nitrogen

• Glucose

How do plants get water

• Through their leaves

• Through their roots

• From chloroplasts

• The flowers capture water and deliver it to the leaves

Why do plants carry out photosynthesis?

• To make glucose (food)

• To make oxygen

• To release energy

• To produce protein

When do plants carry out photosynthesis

• During the day

• During the night

• Both day and night

• Never

When do plants carry out respiration (the chemical reactions that releases energy)

• During the day

• During the night

• Both day and night

• Never

How does carbon dioxide get into the leaves for photosynthesis

• Taken in by the roots

• It is carried in with the water

• Through the stomata (pores/holes in leaf)

• Absorbed by the chloroplasts

How can we increase the rate of photosynthesis (make it happen faster)

• Increase the light levels

• Increase the temperature to 30 degrees C

• Increase the temperature to 50 degrees C

• Increase the amount of CO₂

• Increase the amount of O₂

Which part of this leaf will carry out photosynthesis

• The white part only

• The green part only

• All of the leaf

• None of it