Reproduction in birds
Explain how the reproduction is carried out in the birds ?
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Birds, too have sexual reproduction just like every vertebrate. Their embryos are developed within the shelled eggs containing extra embryonic membranes and outside the body of mother .Birds copulate. Fecundation is internal and it happens only before the female gamete is involved by the calcareous eggshell.
Cell movements: Cell movements are movements functioned by cell structures, similar to the movements of cilia and flagella, the pseudopod movements (in amoeba, macrophages, and so on), the cyclosis of cytoplasm and the sarcomere contraction in the mus
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