- Home
- Standard 12
- Biology
2.Human Reproduction
medium
Assertion : During fertilization only head of spermatozoa enters egg.
Reason : If several spermatozoa hit the egg at same time, all can enter the egg.
A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.
(AIIMS-1997)
Solution
Fertilization is the fusion of male and female gametes to form zygote. During fertilization only head of the sperm enters egg. After that polyspermy is avoided by fertilization membrane.
Standard 12
Biology
