Define the term 'coitus'.

Important Questions on Human Reproduction

HARD

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 49

Where does the first cleavage division of zygote take place?

EASY

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 50

Explain the following term.
Blastocyst.

EASY

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 51

At what stage is mammalian embryo implanted in the uterus?

MEDIUM

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 52

Write the differences between menarche and menopause.

EASY

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 53

How and at what stage of the menstrual cycle is corpus luteum formed in human females? When does it regress?

MEDIUM

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 54

What is the menstrual cycle? Which hormones regulate the menstrual cycle?

EASY

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 55

Why does the failure of testes to descend into the scrotum cause sterility?

EASY

12th Uttar Pradesh Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Human Reproduction>Exercise>Q 56

Where are the Leydig's cells present? What is their role in reproduction?