How do Organisms Reproduce? – Very Short Answer Type Questions
Class 10
CBSE Board Examinations
Strictly per NCERT syllabus • Quick revision • Topic-wise
Strictly per NCERT syllabus • Quick revision • Topic-wise
Instructions: These very short questions (one-line answers) are organised topic-wise for quick revision. Use them for speedy recall and board exam preparation.
1. Basics of Reproduction (Q1–Q6)
Q1. What is reproduction?
Production of new individuals of the same species.
Q2. Name two main types of reproduction.
Asexual and sexual reproduction.
Q3. Why is reproduction necessary?
To ensure continuation of species and genetic information transfer.
Q4. Define asexual reproduction (very short).
Reproduction involving one parent producing genetically similar offspring.
Q5. Define sexual reproduction (very short).
Reproduction involving fusion of male and female gametes to form a zygote.
Q6. Give one advantage of sexual reproduction.
Generates genetic variation for evolution and adaptation.
2. Asexual Reproduction (Q7–Q14)
Q7. What is binary fission?
Division of a unicellular organism into two equal parts.
Q8. Example of an organism showing binary fission.
Amoeba (and Paramecium).
Q9. What is budding?
Formation of a new individual as an outgrowth (bud) from parent.
Q10. Example of budding in animals.
Hydra.
Q11. What are spores?
Reproductive cells that can develop into new individuals (e.g., fungi).
Q12. Example organism producing spores.
Rhizopus (a fungus).
Q13. What is fragmentation?
Breaking of body into pieces that regenerate into complete organisms.
Q14. Example of fragmentation.
Planaria (flatworm).
3. Vegetative Propagation in Plants (Q15–Q20)
Q15. What is vegetative propagation?
Asexual reproduction in plants using vegetative parts to form new plants.
Q16. Give one example of natural vegetative propagation.
Runners in strawberry.
Q17. Give one example of artificial vegetative propagation.
Grafting.
Q18. What is a cutting?
A piece of stem or root used to grow a new plant.
Q19. What is a tuber? Give example.
A swollen underground stem storing food; e.g., potato.
Q20. Why is vegetative propagation useful agriculturally?
Produces uniform, disease-free plants and preserves desirable traits.
4. Sexual Reproduction — General Concepts (Q21–Q26)
Q21. What is a gamete?
A haploid reproductive cell (sperm or egg).
Q22. What is fertilization?
Fusion of male and female gametes to form a zygote.
Q23. What is meiosis (very short)?
Cell division that halves chromosome number to form gametes.
Q24. Define zygote.
A diploid cell formed after fertilization (fusion of gametes).
Q25. What is genetic variation?
Differences in DNA among individuals of a species.
Q26. Name one cause of variation during sexual reproduction.
Crossing over during meiosis.
5. Reproduction in Flowering Plants (Q27–Q34)
Q27. What is pollination?
Transfer of pollen from anther to stigma.
Q28. Name two agents of pollination.
Wind and insects.
Q29. What is double fertilization?
One sperm fuses with egg (zygote) and another fuses with polar nuclei (endosperm).
Q30. What does an ovule develop into after fertilization?
A seed.
Q31. What does ovary develop into?
A fruit.
Q32. Define self-pollination (very short).
Pollen transfer within the same flower or plant.
Q33. Define cross-pollination (very short).
Pollen transfer between different plants of the same species.
Q34. What is nectar's role in pollination?
Attracts pollinators like insects and birds.
6. Human Reproduction — Male (Q35–Q38)
Q35. Where are sperm produced?
In the testes.
Q36. Name the male hormone that controls secondary sexual characters.
Testosterone.
Q37. What is semen?
Fluid containing sperm and secretions of accessory glands.
Q38. Where do sperm mature and get stored?
In the epididymis.
7. Human Reproduction — Female (Q39–Q44)
Q39. Where are eggs (ova) produced?
In the ovaries.
Q40. What is ovulation?
Release of an egg from the ovary.
Q41. Where does fertilization usually occur?
In the fallopian tube (oviduct).
Q42. What is the role of the uterus?
Site of implantation and development of the embryo.
Q43. What is the function of the placenta?
Exchanges nutrients and gases between mother and fetus.
Q44. What is menstruation (very short)?
Shedding of uterine lining when fertilization does not occur.
8. Gametogenesis & Menstrual Cycle (Q45–Q48)
Q45. What is spermatogenesis?
Formation of sperm in testes by meiosis.
Q46. What is oogenesis?
Formation of ova in ovaries by meiosis.
Q47. Name two hormones involved in menstrual cycle.
FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone).
Q48. Typical length of menstrual cycle (approx.).
About 28 days.
9. Reproductive Health & Contraception (Q49–Q50)
Q49. Give one method of contraception (short).
Condom (barrier method).
Q50. Why is reproductive health education important?
Prevents STIs, unwanted pregnancies and promotes safe practices.