Quiz
Photosynthesis check
Eight questions on what we covered this week: what plants take in, what they make, and where it happens. Pick one answer for each. After every question you will see the right answer and why.
At the end, type your name and send your score to Ms Adeyemi.
Question 1Which gas do plants take in to carry out photosynthesis?
Plants take in carbon dioxide through tiny pores on the underside of their leaves, called stomata.
Question 2Where in a plant cell does photosynthesis happen?
Chloroplasts contain chlorophyll, which traps the light energy the reaction needs.
Question 3What is the green substance in leaves that absorbs light?
Chlorophyll absorbs red and blue light and reflects green, which is why leaves look green.
Question 4Which of these does photosynthesis produce?
The products are glucose and oxygen. Carbon dioxide and water are what goes in.
Question 5Complete the word equation: carbon dioxide + water → glucose + ...
Oxygen is released as a by-product and leaves through the stomata.
Question 6Where does a plant get the water it uses for photosynthesis?
Root hair cells take water from the soil, and the xylem carries it up to the leaves.
Question 7A plant is kept in a dark cupboard for two days. What happens to photosynthesis?
Photosynthesis needs light energy. In the dark it stops, although the plant keeps respiring.
Question 8How does a plant store glucose it does not use straight away?
Starch does not dissolve in water, so it can be stored in cells without upsetting them. That is why the iodine test on a leaf turns blue-black.
Your result
Send your score to Ms Adeyemi
Type your name as it is on the class list, then press the button. Your score and answers are sent with it.