7. How do Organisms Reproduce?

*नोट: यह सेक्शन रिवीजन के लिए है। अपना ज्ञान परखने के लिए ऊपर दिए गए क्विज़ में भाग लें।

1. What is the full form of DNA?
   A) Deoxyribo Nucleic Acid  |  B) Deoxy Nucleic Acid  |  C) Data Nucleic Acid  |  D) None of these
2. By which method does reproduction occur in Amoeba?
   A) Budding  |  B) Binary Fission  |  C) Regeneration  |  D) Spore formation
3. What is the method of asexual reproduction in Hydra?
   A) Fission  |  B) Budding  |  C) Spores  |  D) Binary fission
4. Which is the male reproductive part of a flower?
   A) Pistil  |  B) Stamen  |  C) Sepal  |  D) Petal
5. What is the female reproductive part of a flower called?
   A) Stamen  |  B) Pistil  |  C) Anther  |  D) Filament
6. What are found in the Anther?
   A) Sepals  |  B) Ovary  |  C) Pollen grains  |  D) Pistil
7. The fusion of male and female gametes is called:
   A) Fermentation  |  B) Fertilization  |  C) Pollination  |  D) Germination
8. Where does fertilization occur in humans?
   A) Uterus  |  B) Fallopian Tube  |  C) Ovary  |  D) Vagina
9. Which hormone controls the traits of puberty in boys?
   A) Estrogen  |  B) Testosterone  |  C) Insulin  |  D) Thyroxine
10. Where are eggs (ova) produced in females?
    A) Uterus  |  B) Ovary  |  C) Fallopian tube  |  D) Urinary bladder
11. An example of a unisexual flower is:
    A) Mustard  |  B) Hibiscus  |  C) Papaya  |  D) Pea
12. An example of a bisexual flower is:
    A) Papaya  |  B) Watermelon  |  C) Mustard  |  D) Date palm
13. Where is the information source for protein synthesis in the cell nucleus?
    A) DNA  |  B) RNA  |  C) Ribosomes  |  D) Mitochondria
14. By which method does reproduction occur in Plasmodium?
    A) Binary fission  |  B) Multiple Fission  |  C) Budding  |  D) Fragmentation
15. By what is reproduction carried out in Bryophyllum?
    A) Root  |  B) Stem  |  C) Buds in leaves  |  D) Flower
16. The organism that reproduces by spores is:
    A) Rhizopus  |  B) Amoeba  |  C) Hydra  |  D) Planaria
17. Through which structure does the embryo get nutrition from the mother's blood?
    A) Uterus  |  B) Placenta  |  C) Fallopian tube  |  D) Cervix
18. What is the approximate cycle of menstruation in females?
    A) 10 days  |  B) 28 days  |  C) 15 days  |  D) 50 days
19. Through what is the message of genetic traits passed to the next generation?
    A) Cytoplasm  |  B) Nucleus (DNA)  |  C) Saliva  |  D) Blood
20. What is the advantage of Vegetative Propagation?
    A) New traits appear  |  B) Plants are prepared in less time  |  C) Seeds are not required  |  D) Both B and C
21. The transfer of pollen grains from the anther to the stigma is called:
    A) Fertilization  |  B) Pollination  |  C) Germination  |  D) Fission
22. When pollination occurs within the same flower or between flowers of the same plant, it is called:
    A) Cross-pollination  |  B) Self-pollination  |  C) Fertilization  |  D) Hybridization
23. Into what does the ovary develop after fertilization?
    A) Seed  |  B) Fruit  |  C) Leaf  |  D) Root
24. Into what does the ovule develop after fertilization?
    A) Fruit  |  B) Seed  |  C) Flower  |  D) Stem
25. Where is sperm produced in the male reproductive system?
    A) Vas deferens  |  B) Testes  |  C) Penis  |  D) Prostate gland
26. Why are testes located outside the body in the scrotum?
    A) For protection  |  B) Requirement of lower temperature for sperm formation  |  C) For appearance  |  D) None of these
27. The common tube into which the vas deferens and urinary tract open is:
    A) Renal tube  |  B) Urethra  |  C) Fallopian tube  |  D) Seminal vesicle
28. Which hormones are secreted at the onset of puberty in females?
    A) Testosterone  |  B) Estrogen and Progesterone  |  C) Insulin  |  D) Thyroxine
29. Which is a mechanical method of contraception?
    A) Copper-T  |  B) Condom  |  C) Both A and B  |  D) Drugs
30. Reproduction by fragmentation occurs in:
    A) Spirogyra  |  B) Amoeba  |  C) Plasmodium  |  D) Yeast
31. In which organism is the power of regeneration found?
    A) Planaria and Hydra  |  B) Cow  |  C) Fish  |  D) Frog
32. What is the number of chromosomes in a male gamete (sperm)?
    A) 46  |  B) 23  |  C) 10  |  D) 50
33. Where is the fertilized egg (Zygote) implanted?
    A) Ovary  |  B) Fallopian tube  |  C) Uterus  |  D) Vagina
34. AIDS is a disease spread by:
    A) Bacteria  |  B) Virus (HIV)  |  C) Fungi  |  D) Protozoa
35. What happens if the egg is not fertilized?
    A) Pregnancy occurs  |  B) Menstruation occurs  |  C) Illness occurs  |  D) None of these
36. In what form is the future plant present in the seed?
    A) Ovule  |  B) Embryo  |  C) Pericarp  |  D) Pollen grain
37. Cutting and tying the vas deferens is called:
    A) Tubectomy  |  B) Vasectomy  |  C) Loop  |  D) Copper-T
38. Blocking the Fallopian tube is called:
    A) Vasectomy  |  B) Tubectomy  |  C) Condom  |  D) None of these
39. Syphilis and Gonorrhoea are which type of diseases?
    A) Respiratory diseases  |  B) Bacterial sexually transmitted diseases (STDs)  |  C) Viral diseases  |  D) Skin diseases
40. Where does the human embryo get its nutrition from?
    A) Mother's lungs  |  B) Mother's blood through the placenta  |  C) Heart  |  D) Vagina
41. Why is DNA replication necessary during cell division?
    A) To increase size  |  B) To create daughter cells with same genetic information  |  C) To change color  |  D) None of these
42. Why do more variations occur in sexual reproduction?
    A) Due to the fusion of DNA from two different parents  |  B) Due to only one parent  |  C) Due to food  |  D) Due to environment
43. What is the function of the Stigma?
    A) Making eggs  |  B) Receiving pollen grains  |  C) Making fruit  |  D) Giving color to flower
44. What is the function of the Prostate and Seminal vesicles in the male reproductive system?
    A) Making sperm  |  B) Providing a fluid medium for easier transport  |  C) Lowering temperature  |  D) None of these
45. What change do contraceptive pills cause in the body?
    A) Kill sperm  |  B) Hormonal balance change to prevent ovulation  |  C) Remove uterus  |  D) None of these
46. Which structure in flowers forms the 'future root' after fertilization?
    A) Plumule  |  B) Radicle  |  C) Cotyledon  |  D) Endosperm
47. What is the importance of the tail in a sperm?
    A) For seeing  |  B) For movement in fluid medium  |  C) For catching the egg  |  D) None of these
48. What is the meaning of Menopause?
    A) Start of menstruation  |  B) Permanent stoppage of menstruation (around 45-50 years)  |  C) Pregnancy  |  D) None of these
49. What is the result of errors in DNA replication?
    A) Death  |  B) Variation  |  C) Increase in height  |  D) None of these
50. By what is the pollen tube formed in a flower?
    A) Pistil  |  B) Germinated pollen grain  |  C) Sepal  |  D) Insect
51. Which hormone induces uterine contractions during childbirth?
    A) Insulin  |  B) Oxytocin  |  C) Estrogen  |  D) Thyroxine
52. What is an example of an IUCD?
    A) Condom  |  B) Copper-T  |  C) Pills  |  D) Vasectomy
53. Why is the process of reproduction complex in multicellular organisms?
    A) Due to specialized cells and organ systems  |  B) They are small  |  C) They don't have DNA  |  D) None of these
54. Which part of the sperm enters the egg during fertilization?
    A) Tail  |  B) Only the head (including nucleus)  |  C) Entire body  |  D) Middle part
55. Are plants grown by vegetative propagation genetically similar to the parent?
    A) No  |  B) Yes (Clones)  |  C) Half similar  |  D) None of these
56. What is the first menstruation in females called?
    A) Menopause  |  B) Menarche  |  C) Fertilization  |  D) Pollination
57. What is the future of a Bud in Yeast?
    A) It gets destroyed  |  B) It detaches to become a new organism  |  C) It becomes a root  |  D) None of these
58. What is the advantage of the surgical method of contraception?
    A) It is temporary  |  B) It is permanent and more effective  |  C) It is cheap  |  D) None of these
59. Where is 'Placentation' found in a flower?
    A) Anther  |  B) Ovary  |  C) Filament  |  D) Petal
60. What is the most effective way to avoid sexually transmitted diseases (STDs)?
    A) Drugs  |  B) Safe sex and use of mechanical barriers  |  C) Bathing  |  D) None of these