| 1. | As the zygote divides and grows, it does so inside the archegonium.
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| 2. | In land plants, the zygote is formed within a chamber called the archegonium.
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| 3. | Since the sperm must swim to the archegonium, fertilisation cannot occur without water.
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| 4. | The horn-shaped sporophyte grows from an archegonium embedded deep in the gametophyte.
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| 5. | The gametophytes produce male ( antheridium ), and female ( archegonium ) gametes.
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| 6. | A lateral branch from the main plant axis bears the female shoot archegonium at its meristem.
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| 7. | Once the embryo has expanded beyond the enclosing archegonium, it is no longer termed an embryo.
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| 8. | Fertilisation takes place when the nucleus of one of the sperm cells enters the egg cell in the megagametophyte s archegonium.
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| 9. | In seedless plants, the archegonium is usually flask-shaped, with a long hollow neck through which the sperm cell enters.
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| 10. | Sexual reproduction involves the production of ascospores, commencing with the fusion of an archegonium and an antheridium, with sharing of nuclei.
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