Class 10 Science How do Organisms Reproduce
Class 10 Science How do Organisms Reproduce Fill in the blanks , Multiple Choice Question [mcq] and True false .
Fill in the Blanks
1. Reproduction is not essential to maintain the life of an individual organism, unlike processes like ________. Answer: nutrition, respiration, or excretion
2. The creation of a ________ copy is a basic event in reproduction. Answer: DNA
3. In ________, organisms like Amoeba split into two equal halves during cell division. Answer: binary fission
4. ________ is the process where organisms like Hydra grow new individuals from outgrowths. Answer: Budding
5. Spirogyra reproduces through ________, where fragments grow into new individuals. Answer: fragmentation
6. The male reproductive part of a flower is called the ________. Answer: stamen
7. The transfer of pollen from the anther to the stigma is called ________.
Answer: pollination
8. The ________ is the female reproductive part of a flower, consisting of the ovary, style, and stigma. Answer: pistil
9. In humans, sperm production occurs in the ________. Answer: testes
10. The ________ is a disc-like tissue that provides nourishment to the embryo from the mother’s blood. Answer: placenta
11. The monthly cycle in females where the uterine lining breaks down is called ________. Answer: menstruation
12. ________ is a contraceptive method that prevents pregnancy by blocking sperm transfer. Answer: Condom
13. The process of cell division that halves the chromosome number for sexual reproduction is called ________. Answer: meiosis
14. ________ reproduction involves two parents, leading to greater genetic variation. Answer: Sexual
15. In ________, plants like sugarcane are grown using vegetative parts like stems. Answer: vegetative propagation
Multiple Choice Questions (MCQs)
1. Which organism reproduces by budding?
(a) Amoeba
(b) Yeast
(c) Plasmodium
(d) Leishmania
Answer: (b) Yeast
2. What is the role of DNA copying in reproduction?
(a) Provides energy
(b) Creates variations
(c) Maintains body temperature
(d) None of the above
Answer: (b) Creates variations
3. Which is NOT a part of the female reproductive system?
(a) Ovary
(b) Vas deferens
(c) Uterus
(d) Fallopian tube
Answer: (b) Vas deferens
4. What is the male gamete in plants called?
(a) Ovule
(b) Pollen grain
(c) Stigma
(d) Style
Answer: (b) Pollen grain
5. Which method prevents pregnancy by altering hormonal balance?
(a) Copper-T
(b) Condom
(c) Oral pills
(d) Vasectomy
Answer: (c) Oral pills
6. Regeneration is observed in:
(a) Hydra
(b) Humans
(c) Birds
(d) Fish
Answer: (a) Hydra
7. The fertilised egg in humans is called:
(a) Embryo
(b) Zygote
(c) Foetus
(d) Gamete
Answer: (b) Zygote
8. Which plant reproduces through spores?
(a) Bryophyllum
(b) Rhizopus
(c) Potato
(d) Rose
Answer: (b) Rhizopus
9. The period of sexual maturation in humans is called:
(a) Menstruation
(b) Puberty
(c) Fertilisation
(d) Germination
Answer: (b) Puberty
10. Which contraceptive method is a surgical procedure?
(a) Condom
(b) Copper-T
(c) Vasectomy
(d) Oral pills
Answer: (c) Vasectomy
11. The fusion of male and female gametes is called:
(a) Pollination
(b) Fertilisation
(c) Menstruation
(d) Germination
Answer: (b) Fertilisation
12. Which is NOT a vegetative propagation method?
(a) Grafting
(b) Spore formation
(c) Layering
(d) Cutting
Answer: (b) Spore formation
13. The testes are located outside the abdominal cavity to:
(a) Protect from injury
(b) Maintain lower temperature
(c) Store sperm
(d) Produce hormones
Answer: (b) Maintain lower temperature
14. The female hormone-producing organ is the:
(a) Uterus
(b) Ovary
(c) Fallopian tube
(d) Vagina
Answer: (b) Ovary
15. Which is a sexually transmitted disease?
(a) Malaria
(b) Gonorrhoea
(c) Typhoid
(d) Tuberculosis
Answer: (b) Gonorrhoea
True/False Questions
1. Reproduction is essential for the survival of an individual organism. Answer: False
2. DNA copying leads to variations in offspring. Answer: True
3. Binary fission and multiple fission are the same processes. Answer: False
4. Yeast reproduces through spore formation. Answer: False
5. Vegetative propagation is a type of asexual reproduction. Answer: True
6. Pollination and fertilisation are the same processes. Answer: False
7. The uterus is part of the male reproductive system. Answer: False
8. Puberty marks the onset of sexual maturation. Answer: True
9. Condoms can prevent both pregnancy and STDs. Answer: True
10. The placenta provides oxygen to the embryo. Answer: True
11. Leishmania reproduces by multiple fission. Answer: False
12. All flowers are bisexual. Answer: False
13. Menstruation occurs when the egg is fertilised. Answer: False
14. Surgical methods of contraception are reversible. Answer: False
15. Variation is beneficial only for individuals, not species. Answer: False
