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SS2: BIOLOGY - 3RD TERM

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  1. Pollution | Week 1
    3 Topics
  2. Pollution II | Week 2
    3 Topics
    |
    1 Quiz
  3. Conservation of Natural Resources | Week 3
    6 Topics
    |
    1 Quiz
  4. Pests and Diseases of Crops | Week 4
    4 Topics
  5. Control of Pests | Week 5
    3 Topics
    |
    1 Quiz
  6. Reproductive System in Vertebrates I | Week 6
    5 Topics
    |
    1 Quiz
  7. Reproductive System in Vertebrates II (Mammals)| Week 7
    4 Topics
    |
    1 Quiz
  8. Reproductive System in Vertebrates III (Comparison of Reproduction in Vertebrates) | Week 8
    4 Topics
    |
    1 Quiz
  9. Reproductive System in Plants | Week 9
    2 Topics
    |
    1 Quiz
  10. Pollination in Plants | Week 10
    4 Topics
    |
    1 Quiz



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Topic Content:

  • Meaning of Cross-Pollination
  • Advantages of Cross-Pollination
  • Disadvantages of Cross-Pollination
  • Arrangement of Flowers that Favour Cross-Pollination

What is Cross-Pollination?

Cross-pollination is the transfer of mature pollen grains from the anther of a flower to the stigma of another flower of another plant of the same species.

The emphasis is on the same species, for instance, pollen grains may be transferred from a pawpaw flower to a mango flower. This transfer cannot be described as cross-pollination since both are not of the same species.

Advantages of Cross-Pollination:

 

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