Multiple choice

Which of the following combinations best describes the characteristic of amphibians in early developmental process?

  1. Mesolecithal eggs, telolecithal eggs and unequal holoblastic cleavage

  2. Microlecithal eggs, telolecithal eggs and discoidal cleavage

  3. Macrolecithal eggs, centrolecithal eggs and unequal holoblastic cleavage

  4. Mesolecithal eggs, meiolecithal eggs and unequal holoblastic cleavage
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A Correct answer
Explanation

Amphibian eggs are mesolecithal (moderate amount of yolk) and telolecithal (yolk concentrated at one pole). They undergo unequal holoblastic cleavage, where the entire egg divides but into unequal-sized cells due to yolk distribution. This contrasts with other egg types in the options.

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