Question

Correct sequence in development is –
(a) fertilization ➝ zygote ➝cleavage ➝ morula
➝ blastula ➝ gastrula
(b) fertilization ➝zygote ➝blastula ➝morula
➝cleavage ➝gastrula
(c) fertilization ➝cleavage ➝morula ➝zygote
➝blastula ➝ gastrula
(d) cleavage ➝zygote ➝ fertilization ➝morula
➝Blastula ➝Gastrula

Answer 1

Explanation:

Option b is right

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Answer 2

Correct sequence in development:

• Option “A” is correct i.e. Fertilization-zygote-cleavage-morula-blastula-gastrula.

• Embryogenesis is the course by which the growth of embryo takes place. It starts with the fertilization by the union of 2 reproductive gametes to form zygote and zygote experiences cleavage and follows morula, blastula and gastrula stages for additional development.

• So the correct option is 'Fertilization, Zygote, Cleavage, Morula , Blastula, Gastrula.'

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