Reproduction in Animals Part 2: MCQs (Q26–Q50)
🐣 Reproduction in Animals – MCQs for Class 8 Science
Part 2: Q26–Q50
Q26. Which organ is the site of fertilization in humans?
A) Uterus
B) Ovary
C) Oviduct (Fallopian tube)
D) Vagina
✅ Correct Answer: C) Oviduct (Fallopian tube)
Explanation:
- A) Uterus – Site of embryo growth.
- B) Ovary – Produces eggs.
- C) ✔ Fertilization occurs in the oviduct.
- D) Vagina – Birth canal.
Q27. Which of the following is a viviparous animal?
A) Hen
B) Lizard
C) Dog
D) Crocodile
✅ Correct Answer: C) Dog
Explanation:
- A, B, D – Lay eggs (oviparous).
- C) ✔ Dogs give birth to young ones.
Q28. The male reproductive organ in humans is:
A) Testis
B) Ovary
C) Uterus
D) Oviduct
✅ Correct Answer: A) Testis
Explanation:
- A) ✔ Testes produce sperms.
- B, C, D – Female reproductive organs.
Q29. Which of these animals reproduces by external fertilization?
A) Cat
B) Fish
C) Dog
D) Cow
✅ Correct Answer: B) Fish
Explanation:
- A, C, D – Internal fertilization.
- B) ✔ Fish release gametes in water → external fertilization.
Q30. The union of sperm and egg forms:
A) Ovum
B) Embryo
C) Zygote
D) Foetus
✅ Correct Answer: C) Zygote
Explanation:
- A) Ovum – Female gamete.
- B, D – Later stages.
- C) ✔ Fertilization results in zygote.
Q31. Which organ carries the embryo during pregnancy?
A) Ovary
B) Uterus
C) Oviduct
D) Vagina
✅ Correct Answer: B) Uterus
Explanation:
- A, C, D – Not suitable.
- B) ✔ Uterus provides protection and nourishment to embryo.
Q32. Which of these is an example of asexual reproduction?
A) Binary fission in Amoeba
B) Fertilization in humans
C) Egg laying in hens
D) Zygote formation
✅ Correct Answer: A) Binary fission in Amoeba
Explanation:
- A) ✔ Single parent → asexual.
- B, C, D – Sexual reproduction.
Q33. In budding of Hydra, the bud develops from:
A) Ovary
B) Testis
C) Body wall
D) Tail
✅ Correct Answer: C) Body wall
Explanation:
- A, B, D – Not involved in Hydra reproduction.
- C) ✔ Bud grows from parent’s body wall.
Q34. Which part of the sperm contains the genetic material?
A) Tail
B) Head
C) Middle piece
D) Cytoplasm
✅ Correct Answer: B) Head
Explanation:
- A) Tail – Movement.
- B) ✔ Head has nucleus with DNA.
- C) Middle piece – Contains mitochondria.
- D) Cytoplasm – Minimal in sperm.
Q35. Which of these animals lay eggs in water?
A) Dog
B) Cow
C) Frog
D) Cat
✅ Correct Answer: C) Frog
Explanation:
- A, B, D – Viviparous.
- C) ✔ Frogs are oviparous with external fertilization.
Q36. The main function of the female ovary is:
A) Producing sperms
B) Producing eggs
C) Development of embryo
D) Transport of gametes
✅ Correct Answer: B) Producing eggs
Explanation:
- A) Sperms produced in testes.
- B) ✔ Ovaries release eggs.
- C) Uterus develops embryo.
- D) Oviduct transports gametes.
Q37. Which reproductive organ forms the passage for the baby at birth?
A) Ovary
B) Oviduct
C) Uterus
D) Vagina
✅ Correct Answer: D) Vagina
Explanation:
- A, B, C – Other functions.
- D) ✔ Vagina serves as birth canal.
Q38. Which of these is NOT true for fertilization in humans?
A) It occurs inside female body.
B) It produces zygote.
C) It takes place in ovary.
D) It needs sperm and egg.
✅ Correct Answer: C) It takes place in ovary
Explanation:
- A, B, D – Correct facts.
- C) ✔ Fertilization occurs in oviduct, not ovary.
Q39. Which animal reproduces both sexually and asexually?
A) Amoeba
B) Hydra
C) Dog
D) Cow
✅ Correct Answer: B) Hydra
Explanation:
- A) Amoeba – Only asexual.
- B) ✔ Hydra reproduces asexually (budding) and sexually.
- C, D – Only sexual reproduction.
Q40. In human males, sperm is produced in:
A) Urethra
B) Penis
C) Testis
D) Prostate gland
✅ Correct Answer: C) Testis
Explanation:
- A, B, D – Not sperm-producing.
- C) ✔ Testes produce sperm.
Q41. Which of these is NOT an oviparous animal?
A) Hen
B) Crocodile
C) Cow
D) Fish
✅ Correct Answer: C) Cow
Explanation:
- A, B, D – Lay eggs.
- C) ✔ Cow is viviparous.
Q42. The animals that give birth to young ones are called:
A) Viviparous
B) Oviparous
C) Amphibians
D) Reptiles
✅ Correct Answer: A) Viviparous
Explanation:
- A) ✔ Viviparous → young ones.
- B) Oviparous → lay eggs.
- C, D – General groups, not definitions.
Q43. In which stage of development is the body shape of the organism visible?
A) Gamete
B) Zygote
C) Embryo
D) Foetus
✅ Correct Answer: D) Foetus
Explanation:
- A, B, C – Early stages.
- D) ✔ Foetus has visible body shape and organs.
Q44. Which organ connects ovary and uterus in females?
A) Vagina
B) Oviduct (Fallopian tube)
C) Cervix
D) Placenta
✅ Correct Answer: B) Oviduct (Fallopian tube)
Explanation:
- A, C, D – Not connectors.
- B) ✔ Oviduct links ovary to uterus, site of fertilization.
Q45. Which statement is true about zygote?
A) It is haploid.
B) It results from fertilization.
C) It develops into sperm.
D) It is a type of gamete.
✅ Correct Answer: B) It results from fertilization
Explanation:
- A) Zygote is diploid.
- B) ✔ Sperm + egg = zygote.
- C, D – Incorrect.
Q46. Which part of sperm provides energy for its movement?
A) Head
B) Middle piece
C) Tail
D) Acrosome
✅ Correct Answer: B) Middle piece
Explanation:
- A) Head → DNA.
- B) ✔ Middle piece → mitochondria (energy).
- C) Tail → movement.
- D) Acrosome → egg penetration.
Q47. Which of these animals shows internal fertilization?
A) Frog
B) Fish
C) Dog
D) Toad
✅ Correct Answer: C) Dog
Explanation:
- A, B, D – External fertilization.
- C) ✔ Dog → internal fertilization.
Q48. Which process involves production of gametes?
A) Fertilization
B) Gametogenesis
C) Reproduction
D) Implantation
✅ Correct Answer: B) Gametogenesis
Explanation:
- A) Fertilization – Gametes fuse.
- B) ✔ Gametogenesis forms gametes.
- C) Reproduction – Broader term.
- D) Implantation – Embryo attaches.
Q49. Which animal reproduces asexually by regeneration?
A) Amoeba
B) Earthworm
C) Planaria
D) Hydra
✅ Correct Answer: C) Planaria
Explanation:
- A) Amoeba → binary fission.
- B) Earthworm → sexual.
- C) ✔ Planaria → regeneration.
- D) Hydra → budding.
Q50. Which process leads to formation of embryo from zygote?
A) Fertilization
B) Cell division
C) Gamete fusion
D) Implantation
✅ Correct Answer: B) Cell division
Explanation:
- A, C, D – Other steps.
- B) ✔ Zygote divides repeatedly to form embryo.
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