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Published on: 01/06/2021
QB365 provides detailed and simple solution for every book back questions in class 12 Biology subject.It will helps to get more idea about question pattern in every book back questions with solution.
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Find the wrongly matched pair.
Bleeding phase- fall in oestrogen and progesterone
Follicular phase-rise in oestrogen
Luteal phase - rise in FSH level
Ovulatory phase - LH surge
2.
Which one of the following menstrual irregularities is correctly matched?
Menorrhagia - excessive
Amenorrhoea - absence of menstruation
Dysmenorrhoea - irregularity of menstruation
Oligomenorrhoea - painful menstruation
3.
4.
Assertion(A): Ovulation is the release of ovum from the Graafian follicle.
Reason(R): It occurs during the follicular phase of the menstrual cycle.
Codes:
(a) A and R are true, R is the correct explanation of A
(b) A and R are true, R is not the correct explanation of A
(c) A is true, R is false
(d) Both A and R are false
A and R are true, R is the correct explanation of A
A and R are true, R is not the correct explanation of A
A is true, R is false
Both A and R are false
5.
Assertion(A): In human male, testes are extra abdominal and lie in scrotal sacs.
Reason(R): Scrotum acts as thermoregulator and keeps temperature lower by 2oC for normal sperm production.
Codes:
(a) A and R are true, R is the correct explanation of A
(b) A and R are true, R is not the correct explanation of A
(c) A is true, R is false
(d) Both A and R are false
A and R are true, R is the correct explanation of A
A and R are true, R is not the correct explanation of A
A is true, R is false
Both A and R are false
1.
(c)
Luteal phase - rise in FSH level
2.
(b)
Amenorrhoea - absence of menstruation
3.
(d)
4.
(c) A is true, R is false
5.
(a) A and R are true, R is the correct explanation of A
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