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6. What is a disadvantage of self pollination?

  • There's a lack of variation, decreasing the chance of survival
  • Variation increases within individuals
  • Energy consumption is high as many gametes must be produced
  • Favourable gene combinations are retained

7. What becomes the testa?

  • Ovary
  • Embryo sac
  • Outer integument
  • Fertilised ovule

8. What is pollination?

  • The transfer of pollen from anther to stigma
  • The transfer of pollen from stigma to anther
  • The production of an egg cell
  • The production of CO2 in a plant