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Bryophytes are dependent on water because

1. water is essential for fertilization for their homosporous nature
2. water is essential for their vegetative propagation
3. the sperms can easily reach upto egg in the archegonium
4. archegonium has to remain filled with water for fertilization

Correct answer: the sperms can easily reach upto egg in the archegonium

Solution

Bryophytes need water because their sperm are flagellated and must swim through a thin layer of water to reach the egg inside the archegonium. Without water, fertilization cannot occur.

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