Science 3 · Unit 1: Plants are living things · Cambridge Primary Science Stage 3

Questions

1. 1. Which conditions do plants need to grow and be healthy?

   • darkness, cold and no water
   • only light
   • warmth, water, light and air
   • only soil
   Check

2. 2. What might an unhealthy plant look like?

   • It grows very tall and strong.
   • It has strong roots and green leaves.
   • It grows lots of flowers.
   • It has yellow leaves and wilts.
   Check

3. 3. What is germination?

   • when leaves fall
   • when a flower opens
   • when a seed starts to grow
   • when a plant dies
   Check

4. 4. What is inside a seed?

   • soil and stones
   • water and air only
   • a flower and fruit
   • a tiny root shoot, a tiny stem shoot and a food store
   Check

5. 5. Which grows first from a seed?

   • the leaves
   • the root shoot
   • the flower
   • the stem shoot
   Check

6. 6. What do we call baby plants?

   • chicks
   • calves
   • seedlings
   • cubs
   Check

7. 7. Seedlings near a window have bent stems. Why?

   • The wind blew them.
   • They are growing towards the light.
   • They need more soil.
   • They are too heavy.
   Check

8. 8. How could you make the seedlings by the window grow straight?

   • cut the stems
   • turn the pot round every day
   • put them in the dark
   • give them less water
   Check

9. 9. Why do leaves need light?

   • to make food
   • to absorb water
   • to make seeds
   • to keep warm at night
   Check

10. 10. In a fair test of plants in light and dark, why must the plants be similar?

    • so they need less water
    • so they grow faster
    • so they look nice
    • so only the light is different
    Check

11. 11. What is a fair test?

    • changing just one thing and keeping everything else the same
    • guessing the answer
    • changing everything at once
    • only looking at pictures
    Check

12. 12. Plant A is by a sunny window. Plants B, C and D are further from the light. Which grows best?

    • Plant B
    • Plant D
    • Plant C
    • Plant A
    Check

13. 13. Marcus measures a plant at 9 am every day for nine days. What type of enquiry is this?

    • observing over time
    • classifying
    • research
    • fair testing
    Check

14. 14. A plant grown in the dark has ...

    • a short strong stem
    • big green leaves
    • a tall thin pale stem and small leaves
    • lots of flowers
    Check

15. 15. A seedling was 2 cm in week 1, 4 cm in week 2, 6 cm in week 3, 8 cm in week 4 and 9 cm in week 5. How much did it grow from week 4 to week 5?

    • 17 cm
    • 1 cm
    • 9 cm
    • 2 cm
    Check