Here, you will get Class 12 Biology MCQ of Chapter 3 Human Reproduction for cracking NEET/AIIMS. By solving these MCQs of Class 12 Biology Chapter 3 Human Reproduction, you will get the confidence to crack NEET. Practice MCQ Questions for Class 12 Biology with Answers on a daily basis and score well in exams.
Human Reproduction Class 12 MCQs Questions with Answers
After ovulation Graafian follicle regresses into
(a) corpus atresia
(b) corpus callosum
(c) corpus luteum
(d) corpus albicans
Answer: (c) corpus luteum
Which one of the following events is correctly matched with the time period in a normal menstrual cycle ?
(a) Release of egg : 5th day
(b) Endometrium regenerates : 5 – 10 days
(c) Endometrium secretes nutrients for implantation: 11 – 18 days
(d) Rise in progesterone level : 1 – 15 days
Answer: (b) Endometrium regenerates : 5 – 10 days
A human female reaches menopause aroung the age of
(a) 50 years
(b) 15 years
(c) 70 years
(d) 25 years
Answer: (a) 50 years
Which part of the sperm plays an important role in penetrating the egg membrane ?
(a) Allosome
(b) Tail
(c) Autosome
(d) Acrosome
Answer: (d) Acrosome
Besides activating the egg another role of a sperm is to carry to egg
(a) RNA
(b) mitochondria
(c) DNA
(d) ribosomes
Answer: (c) DNA
Spermiation is the process of the release of sperms from
(a) seminiferous
(b) vas deferens
(c) epididymis
(d) prostate gland
Answer: (a) seminiferous
Identify the odd one from the following
(a) Labia minora
(b) Fimbriae
(c) Infundibulum
(d) Isthmus
Answer: (a) Labia minora
The function of corpus luteum is to produce
(a) estrogen
(b) progesterone
(c) HCG
(d) relaxin
Answer: (a) human being
The function of corpus luteum is to produce
(a) estrogen
(b) progesterone
(c) HCG
(d) relaxin
Answer: (b) progesterone
In human adult females oxytocin
(a) stimulates pituitary to secrete vasopressin
(b) causes strong uterine contractions during parturition
(c) is secreted by anterior pituitary
(d) stimulates growth of mammary glands
Answer: (b) causes strong uterine contractions during parturition
Seminal plasma, the fluid part of semen, is contributed by
(i) Seminal vesicle (ii) Prostate gland (iii) Urethra (iv) Bulbourethral gland
(a) (i) and (ii)
(b) (i), (ii) and (iv)
(c) (ii), (iii) and (iv)
(d) (i) and (iv)
Answer: (b) (i), (ii) and (iv)
Seminal plasma in humans is rich in
(a) fructose and calcium
(b) glucose and calcium
(c) Progesterone and testosterone
(d) potassium and calcium
Answer: (a) fructose and calcium
Number of chromosomes in polar body of human is
(a) 23
(b) 46
(c) 21
(d) 1
Answer: (a) 23
Graafian follice occur
(a) In humanithyroid
(b) In human female’s ovary
(c) In frog’s ovary
(d) In Rabbits testis
Answer: (c) In frog’s ovary
Androgens stimulate the process of ?
(a) Body
(b) Head
(c) Tail
(d) Spermatogenesis
Answer: (d) Spermatogenesis
Milk is sucked out from the
(a) Mammary lobes
(b) Mammary glands
(c) Mammary ducts
(d) Lactiferous duct
Answer: (d) Lactiferous duct
The vas deferens receives duct from the seminal vesicle and opens into urethra as
(a) epididymis
(b) ejaculatory duct
(c) efferent ductule
(d) ureter
Answer: (b) ejaculatory duct
The immature male germs cell undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
(a) Spermatogonia have 46 chromosomes and always undergo meiotic cell division
(b) Primary spermatocytes divide by mitotic cell division
(c) Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
(d) Spermatozoa are transformed into spermatids
Answer: (c) Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
Morula is a developmental stage
(a) between the zygote and blastocyst
(b) between the blastocyst and gastrula
(c) after the implantation
(d) between implantation and parturition
Answer: (a) between the zygote and blastocyst
Which among the following has 23 chromosomes ?
(a) Spermatogonia
(b) Zygote
(c) Secondary oocyte
(d) Oogonia
Answer: (c) Secondary oocyte
Temperature of the scrotum which is necessary for the functioning of testis is always ________ around below body temperature
(a) 2°C
(b) 4°C
(c) 6°C
(d) 8°C
Answer: (a) 2°C
Sertoli cells are regulated by the pituitary hormone known as
(a) LH
(b) FSH
(c) GH
(d) prolactin
Answer: (b) FSH
The function of the secretion of prostate gland is to
(a) inhibit sperm activity
(b) attract sperms
(c) stimulate sperm activity
(d) none of these
Answer: (c) stimulate sperm activity
Choose the incorrect statement from the following.
(a) In birds and mammals internal fertilisation takes place.
(b) Colostrum contains antibodies and nutrients.
(c) Polyspermy in mammals is prevented by the chemical changes in the egg surface.
(d) In the human female implantation occurs almost seven days after fertilisation.
Answer: (c) Polyspermy in mammals is prevented by the chemical changes in the egg surface.
The signals of parturition originate from
(a) placenta
(b) fully developed foetus
(c) oxytocin released from pituitary
(d) both placenta and fully developed foetus
Answer: (d) both placenta and fully developed foetus
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