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The correct sequence in the process of development of human embryo is
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- fertilization—zygote—cleavage— morula—blastula—gastrula
- fertilization—cleavage—morula— zygote—blastula—gastrula
- fertilization—zygote—blastula— morula—cleavage—gastrula
- cleavage—zygote—fertilization— morula—blastula—gastrula
Correct Option: A
Fusion of male and female gamete produces a zygote. Repeated division of the zygote is called cleavage forming a solid morula. After further division and rearrangement a fluid filled cavity surrounded by blastomeres - blastula is formed. The appearance of germ layers mark the gastrula.
