The reproduction unit gives NEET a steady set of questions every year. This set covers human gametogenesis, the menstrual cycle, fertilisation and implantation, reproductive health and contraception, and sexual reproduction in flowering plants, all based on the NCERT Class 12 text.
How to practise: read each question and tap the option you think is correct. You will see right away whether you got it, along with a short explanation, and your score is tracked at the bottom of the screen. This set has 15 questions.
Topics covered in this set
- Male and female reproductive systems
- Spermatogenesis and oogenesis
- Menstrual cycle, fertilisation and implantation
- Contraception, STIs and ART
- Microsporogenesis, megasporogenesis and embryo sac
- Pollination, double fertilisation and seeds
NEET Biology MCQs with answers and explanations
Q1. Which cells of the testis secrete androgens (testosterone)?
a) Spermatids
b) Sertoli cells
c) Leydig (interstitial) cells
d) Spermatogonia
Q2. How many sperms are formed from 10 primary spermatocytes?
a) 10
b) 80
c) 20
d) 40
Q3. How many ova are formed from 10 primary oocytes?
a) 40
b) 10
c) 20
d) 5
Q4. At which stage is the secondary oocyte released from the Graafian follicle during ovulation?
a) Interphase
b) Metaphase II
c) Telophase II
d) Prophase I
Q5. Which hormone surge triggers ovulation around day 14 of a 28-day menstrual cycle?
a) LH surge
b) Oestrogen fall
c) Progesterone
d) FSH fall
Q6. The corpus luteum mainly secretes:
a) FSH
b) LH
c) hCG
d) Progesterone
Q7. Where does fertilisation normally take place in the human female?
a) Ampullary region of the fallopian tube
b) Cervix
c) Isthmus of the fallopian tube
d) Uterus
Q8. Which part of the blastocyst gets attached to the endometrium and later forms the placenta along with maternal tissue?
a) Blastocoel
b) Trophoblast
c) Zona pellucida
d) Inner cell mass
Q9. Copper-releasing IUDs such as CuT and Multiload 375 prevent pregnancy mainly by:
a) Blocking the vas deferens
b) Releasing hormones that stop ovulation
c) Suppressing sperm motility and fertilising capacity
d) Killing the embryo after implantation
Q10. In which technique is the early embryo with up to 8 blastomeres transferred into the fallopian tube?
a) ICSI
b) IUT
c) ZIFT
d) GIFT
Q11. A typical (Polygonum type) angiosperm embryo sac is:
a) 7-nucleate and 8-celled
b) 8-nucleate and 7-celled
c) 8-nucleate and 8-celled
d) 4-nucleate and 4-celled
Q12. In a plant with 2n = 24, what is the chromosome number of the endosperm?
a) 24
b) 48
c) 36
d) 12
Q13. The pollen grain wall layer exine is made of sporopollenin. Which statement about sporopollenin is correct?
a) It is easily destroyed by enzymes
b) It is present only at the germ pores
c) It is made of cellulose and pectin
d) It is one of the most resistant organic materials known
Q14. Transfer of pollen from the anther to the stigma of another flower on the same plant is called:
a) Xenogamy
b) Cleistogamy
c) Autogamy
d) Geitonogamy
Q15. Which structure of a fertilised ovule becomes the seed coat?
a) Nucellus
b) Funicle
c) Ovary wall
d) Integuments
Quick revision notes
- Leydig cells make testosterone; Sertoli cells nourish germ cells.
- 1 primary spermatocyte → 4 sperms; 1 primary oocyte → 1 ovum + polar bodies.
- LH surge triggers ovulation; corpus luteum secretes progesterone.
- Embryo sac: 8-nucleate, 7-celled; endosperm is 3n.
- Autogamy same flower, geitonogamy same plant, xenogamy different plant.
Frequently asked questions
Are these NEET previous year questions?
No. They are original practice questions based on the NCERT Class 12 chapters Human Reproduction, Reproductive Health and Sexual Reproduction in Flowering Plants.
How do I remember the menstrual cycle phases?
Learn them in order with their hormones: menstrual phase (days 1–5), follicular phase under FSH and oestrogen, ovulation by the LH surge at about day 14, and the luteal phase under progesterone.
What is the most common confusion in double fertilisation questions?
Remember that syngamy gives the diploid zygote and triple fusion gives the triploid primary endosperm nucleus. Both happen in the embryo sac.
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