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प्रश्न
How can we say that fish exhibits external fertilisation?
लघु उत्तरीय
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उत्तर
Female fish lay eggs in water while male fish release their sperm in water. Sperm swim and reach the eggs of fish, randomly due to water currents. When a sperm comes in contact with the viable egg, nuclei of both cells fuse to form a zygote. This process of fertilisation takes place in water outside the female body, hence fertilisation is external in fishes.
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