MEDIUM
12th CBSE
IMPORTANT
Earn 100

What is the significance of ampullary-isthmic junction in the female reproductive tract?

Important Questions on Human Reproduction

MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>VERY SHORT ANSWER TYPE QUESTIONS>Q 13
How does zona pellucida of ovum help in preventing polyspermy?
 
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>VERY SHORT ANSWER TYPE QUESTIONS>Q 14
Mention the importance of LH surge during the menstrual cycle. 
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>VERY SHORT ANSWER TYPE QUESTIONS>Q 15
Which type of cell division forms spermatids from the secondary spermatocytes?
 
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 1

A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.

MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 3 - Human Reproduction>SHORT ANSWER TYPE QUESTIONS>Q 2
How many spermatozoa are formed from one secondary spermatocyte?
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.