Class 12 Biology Human Reproduction Pregnancy and Embryonic development

Easy

When is the heart formed in a human embryo?

A
After one month of pregnancy
B
At the third week of pregnancy
C
At the fourth week of pregnancy
D
After eight weeks of pregnancy

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Class 12 Questions

Class 12

Biology Questions

Chapter

Human Reproduction

Subtopic

Pregnancy and Embryonic development

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The process of cell differentiation begins and ends in which of the following stages?

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