Evolution Question 87

87. The presence of gill slits, in the embryos of all vertebrates, supports the theory of

[1995]

(a) biogenesis

(b) recapitulation

(c) metamorphosis

(d) organic evolution

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Answer : b

Hints & Solution

(b) In the embryos of all vertebrates, the presence of gill slits supports the theory of recapitulation (repeating the early stages of embryogenesis in earlier evolved animals).