Question

Fertilization cannot be external in land animals

Answer 1

No ,

Fertilization is external and internal both in human beings .

Answer 2

Answer:

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᪥Fertilisation cannot be external in land animals because land offers dry condition, which is not suitable for sperm and egg cells.

᪥Since sperm are designed to be mobile in a watery environment (they have tails and are streamlined), aquatic animals can only make use of the water in which they live.