Other questions in this quiz

2. How does light intensity affect the rate of photosynthesis?

  • The lower the light intensity, the lower the rate of photosynthesis.
  • The higher the light intensity, the higher the rate of photosynthesis however light intensity limits the rate of photosynthesis. After a while the light intensity has no further affect on the rate of photosynthesis
  • The lower the light intensity, the higher the rate of photosynthesis.
  • The higher the light intensity, the lower the rate of photosynthesis.

3. Describe an experiment to investigate photosynthesis, showing the evolution of oxygen from a water plant and the requirements of light.

  • PART 3 - If the splint relights, oxygen is present. This proves that oxygen is produced through photosynthesis.
  • ADDITIONAL - If you keep the apparatus in the dark, you may be able to collect a gas, but this gas will not relight a glowing splint because it isn't oxygen.
  • PART 1 - You will need a pondweed, beaker, glass tube and a light for this experiment. Firstly, place the pondweed in a flask. Place the light facing the pondweed which will then produce bubbles of oxygen.
  • PART 2 - When the tube is full of gas, test for oxygen by putting a glowing splint quickly into the tube.

4. Why does a plant require nitrates?

  • To photosynthesize.
  • To form amino acids that form proteins of cells growth.
  • To grow.
  • To breathe.

5. Give another adaptation for photosynthesis

  • Leaves contain chlorophyll which are inside millions of chloroplasts to allow absorption different parts of the spectrum.
  • Tall
  • Their shape
  • Because they are green

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