T1.5.2 Plant reproduction and seed dispersal Quiz: KS3 Biology, Unit 1

The 20 questions

1. Which part of a flower makes pollen?

   • The stigma at the top of the carpel
   • The ovary at the base of the carpel
   • The sepal that protects the bud
   • The anther at the top of a stamen

2. What is pollination?

   • The transfer of pollen from an anther to a stigma
   • The joining of a pollen nucleus and an ovule nucleus
   • The release of ripe seeds from a fruit
   • The development of a seed inside a fruit

3. After fertilisation, which part of the flower develops into the fruit?

   • The ovary
   • The anther
   • The sepal
   • The petal

4. Where does fertilisation take place in a flowering plant?

   • Inside the anther in the flower before any pollen is released
   • On the surface of the stigma as soon as the pollen lands there
   • Inside an ovule, where a pollen nucleus fuses with an egg
   • In the petals of the flower after it has opened fully

5. Which feature is typical of a wind-pollinated flower?

   • Bright petals and sweet nectar that attract passing insects
   • Small, feathery stigmas that catch pollen drifting on air
   • A strong scent and sticky, spiky pollen grains for insects
   • Large coloured petals that open only at night for moths

6. Which feature is typical of an insect-pollinated flower?

   • Bright petals, a strong scent and nectar to attract insects
   • Long feathery stigmas that hang outside the flower's petals
   • Huge amounts of very light, dry pollen that the wind carries
   • Small green petals, no scent, and a stigma hidden deep inside

7. A plant has dull flowers, no scent, large amounts of light pollen and feathery stigmas. Which pollination method is most likely?

   • Pollination by water droplets
   • Insect pollination
   • Pollination by animals that eat the petals
   • Wind pollination

8. Which example shows seed dispersal by wind?

   • A burr clinging to a dog's thick fur during a long walk outdoors
   • A coconut floating across the open sea to a distant new beach
   • A dandelion seed with a feathery parachute on the breeze
   • A pea pod that splits open suddenly and flings its seeds outward

9. Which example shows seed dispersal by animals?

   • Seeds that float on water currents until they reach a beach
   • Seeds in a juicy fruit that a bird eats and later drops
   • Seeds with a feathery parachute that the wind carries off
   • Seeds in a pea pod that split open and fling them far away

10. What is explosive seed dispersal?

    • Seeds are carried away by ocean currents
    • Dry pods split suddenly and throw the seeds out
    • Fruits are eaten and the seeds pass through the gut
    • Seeds stick to fur using tiny hooks

11. Which seed structure helps seeds stick to the fur of passing animals?

    • A thick waxy coat that repels water
    • A feathery parachute made of fine hairs
    • Small hooks or barbs on the seed case
    • A large, bright, sweet fleshy layer

12. Why can a coconut travel across the sea to a new island?

    • It is eaten by fish and passed out at sea
    • It floats and has a tough, waterproof outer husk
    • It splits open when it touches salt water
    • It is carried up by strong winds to high altitudes

13. A student drops seeds from different heights and measures how far each lands from the drop point. What is the independent variable?

    • The height the seed is dropped from
    • The type of seed used in the test
    • The distance the seed lands from the drop point
    • The number of seeds dropped each time

14. Why do many wind-dispersed seeds have wings or parachutes?

    • They make the seed lighter than water so it floats on lakes
    • They slow their fall so the wind carries them further away
    • They attract birds that will carry the seed away from the plant
    • They stop insects from eating the seed before it can be dispersed

15. Why must fertilisation happen before a seed can develop?

    • It produces the pollen grains that are stored inside the anther
    • It gives the seed its tough outer coat, which protects the embryo
    • It joins male and female genetic material to form a zygote
    • It supplies the ovary with water so that the fruit can swell up

16. Which part of the flower receives pollen?

    • The stigma
    • The anther
    • The filament
    • The sepal

17. Which part of the female part of a flower contains the ovules?

    • The ovary
    • The filament
    • The stigma
    • The style

18. After fertilisation, what do the ovules develop into?

    • Seeds
    • Fruits
    • Pollen grains
    • Petals

19. A fruit is produced with no seeds inside. What is the most likely reason?

    • The stigma was too large to receive pollen
    • The flower was not pollinated or fertilised
    • The petals were too bright for insects
    • The plant had too much sunlight during growth

20. Which part of a flower protects the developing bud?

    • The filament
    • The stigma
    • The ovary
    • The sepal

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