Question

The presence of gill slits, in the embryos of all vertebrates support the theory of?

• A. Metamorphosis
• B. Biogenesis
• C. Organic evolution
• D. Recapitulation

Answer 1

The correct option is A Metamorphosis

Metamorphosis is a biological processes by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Metamorphosis is iodothyronine-induced and an ancestral feature of all chordates. For e.g. presence of gill slit in the embryos explains the origin of respiratory systems in all vertebrates.

So the correct answer is 'Metamorphosis'.