Science 5 · Unit 1: Life cycles of flowering plants · Cambridge Primary Science Stage 5

Questions

1. 1. What is pollination?

   • when a seed starts to grow
   • when seeds are spread
   • the movement of pollen from the anther to the stigma of the same kind of flower
   • when pollen and eggs join
   Check

2. 2. What are the two main ways pollen is moved?

   • by roots and by leaves
   • by sunlight and by soil
   • by water and by rocks
   • by insects and by wind
   Check

3. 3. What is nectar?

   • a sweet liquid in flowers
   • a green leaf
   • a yellow powder
   • a sticky part of the carpel
   Check

4. 4. How do flowers attract insect pollinators?

   • no petals at all
   • lots of light, smooth pollen only
   • bright petals, scent, nectar and marks on the petals
   • small dull petals and no scent
   Check

5. 5. Why do wind-pollinated flowers have small, dull petals and no scent?

   • They want to hide from the wind.
   • They have no pollen.
   • They don't need to attract insects.
   • They are too young.
   Check

6. 6. Why do wind-pollinated flowers make lots of smooth, light pollen?

   • so it blows away easily and some reaches other flowers
   • so it sticks to animals
   • so it sinks into the soil
   • so insects can eat it
   Check

7. 7. Which plant is wind pollinated?

   • rice
   • an apple tree
   • a sunflower
   • a rose
   Check

8. 8. What is fertilisation?

   • when a seed starts to grow
   • when pollen and eggs join to make seeds
   • when seeds are spread
   • when pollen moves to the stigma
   Check

9. 9. Where does fertilisation happen?

   • in the soil
   • in the anther
   • on the petals
   • in the ovary
   Check

10. 10. Which part of the flower becomes the fruit?

    • the ovary
    • the sepals
    • the petals
    • the anther
    Check

11. 11. What are the functions of the fruit?

    • to make food from light
    • to protect the seeds and help spread them
    • to catch pollen
    • to make pollen and nectar
    Check

12. 12. Aliyah's class counted insects on flowers: red 3, yellow 12, white 10, blue 6. Which colour did most insects visit?

    • white
    • yellow
    • blue
    • red
    Check

13. 13. What type of scientific enquiry did Aliyah's class use by counting insects on different colours?

    • observing over time
    • looking for patterns
    • fair testing
    • research
    Check

14. 14. Moths pollinate flowers at night. What colour are these flowers likely to be?

    • black
    • dark red
    • dark blue
    • white or pale
    Check

15. 15. Does fertilisation happen if the pollen comes from a different kind of flower?

    • Yes
    • No
    Check

16. 16. How is pollination different from fertilisation?

    • Fertilisation happens first.
    • They are the same thing.
    • Pollination moves pollen to the stigma; fertilisation is pollen and egg joining.
    • Pollination happens in the soil.
    Check