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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 Reproduction
  • The Structure of a Flower
    • Calyx
    • Corolla
    • Androecium
    • Gynoecium
  • Types of Ovary
    • Superior Ovary
    • Inferior Ovary
    • Half-Inferior Ovary
flowering plant

What is Reproduction?

Reproduction is the process that brings forth new organisms of the same kind as their parents. Offspring are produced by the process of reproduction. The flowers are the sexual parts of a flowering plant. They contain the sexual organs in which the gametes are produced.

The Structure of a Flower:

The flower is a part of the shoot modified for sexual reproduction. It develops on the receptacle, which is the flattened tip of the flower stalk or pedicel. The floral parts are arranged in circles or whorls and there may be up to four whorls.

Whorls

Starting from the outside, these whorls are:

1. The Calyx made up of sepals

 

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