MEDIUM
12th CBSE
IMPORTANT
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How many spermatozoa are formed from one secondary spermatocyte?

Important Questions on Human Reproduction

HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 2
Where does the first cleavage division of zygote take place?
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 3
Corpus luteum in pregnancy has a long life. However, if fertilisation does not take place, it remains active only for 10-12 days. Explain.
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 4
What is foetal ejection reflex? Explain how it leads to parturition.
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 5
Except for endocrine function, what are the other functions of placenta?
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 6
Why do doctors recommend breastfeeding during the initial period of infant growth?
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 7
What are the events that take place in the ovary and uterus during the follicular phase of the menstrual cycle? 
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 9
Give a schematic labelled diagram to represent oogenesis (without descriptions).
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 10
 What are the changes in the oogonia during the transition of a primary follicle to graafian follicle?