Class 12 Biology Human Reproduction Pregnancy and Embryonic development

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The first sign of the growing foetus may be noticed by listening to the heart sound carefully through the stethoscope. The embryo's heart is formed after one month of pregnancy. Which of the following gestation periods is correctly matched?

A
Dog: $60-65$ days
B
Elephant: $607-641$ days
C
Cat: $52-65$ days
D
Cow: $330-345$ days

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Class 12 Questions

Class 12

Biology Questions

Chapter

Human Reproduction

Subtopic

Pregnancy and Embryonic development

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