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How do Organisms Reproduce? — Class 10 CBSE Science MCQs with Solutions
Free Class 10 CBSE Science How do Organisms Reproduce? MCQs with step-by-step solutions. Practise online on Prepizo — no login needed.
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Sample questions with solutions
Q1 — easy
Asexual reproduction in unicellular *Amoeba* where parent splits into two equal daughter cells is:
A. Multiple fission
B. Binary fission ✓ Correct
C. Budding
D. Fragmentation
Solution: Binary fission produces two identical daughter cells.
Q2 — easy
Multiple fission is observed during adverse conditions in unicellular parasite:
A. Amoeba
B. Plasmodium ✓ Correct
C. Leishmania
D. Paramecium
Solution: Plasmodium undergoes multiple fission inside cyst.
Q3 — easy
Hydra and Yeast reproduce asexually by developing outward outgrowths called:
A. Spores
B. Buds ✓ Correct
C. Fragments
D. Rhizomes
Solution: Budding forms new individuals from parent outgrowth.
Q4 — easy
Filamentous green alga *Spirogyra* reproduces upon maturity by breaking into smaller pieces via:
A. Regeneration
B. Fragmentation ✓ Correct
C. Fission
D. Spore formation
Solution: Spirogyra breaks into functional fragments.
Q5 — easy
Simple organisms like *Planaria* and *Hydra* can reconstruct complete body from cut body pieces via:
A. Fragmentation
B. Regeneration ✓ Correct
C. Budding
D. Fission
Solution: Regeneration uses specialized stem cells to regrow lost body parts.
Q6 — easy
Fungi like *Rhizopus* (bread mould) produce asexual reproductive structures called:
A. Buds
B. Spores inside sporangia ✓ Correct
C. Seeds
D. Pollens
Solution: Sporangia release resistant spores.
Q7 — easy
Artificial vegetative propagation technique used in horticulture to combine desirable traits of two plants (Stock and Scion) is:
A. Cutting
B. Grafting ✓ Correct
C. Layering
D. Tissue culture
Solution: Grafting joins scion onto rooted stock.
Q8 — easy
Female reproductive part of a flower (Carpel/Pistil) consists of three parts:
A. Anther, Filament, Pollen
B. Stigma, Style, Ovary ✓ Correct
C. Sepal, Petal, Stamen
D. Ovule, Seed, Fruit
Solution: Pistil = Stigma + Style + Ovary.
Q9 — easy
Pollination is transfer of pollen grains from anther to stigma. Fusion of male and female gametes is:
A. Germination
B. Fertilization ✓ Correct
C. Pollination
D. Implantation
Solution: Fertilization forms a diploid zygote.
Q10 — easy
After fertilization, ovary of flower develops into _______ and ovules develop into _______.
A. Seed, Fruit
B. Fruit, Seeds ✓ Correct
C. Flower, Leaf
D. Stem, Root
Solution: Ovary matures into fruit; ovules become seeds.
Q11 — easy
Male primary reproductive organs in humans producing sperms and testosterone hormone are:
A. Prostate glands
B. Testes ✓ Correct
C. Vas deferens
D. Seminal vesicles
Solution: Testes produce spermatozoa and androgen hormones.
Q12 — easy
Human testes are located outside abdominal cavity within scrotum because sperm formation requires temperature:
A. 2-2.5°C lower than normal body temperature ✓ Correct
B. 5°C higher than body temperature
C. Same as body temperature
D. 37°C
Solution: Scrotum maintains cooler temperature essential for spermatogenesis.
Q13 — easy
Site of fertilization in human female reproductive system is:
A. Uterus
B. Fallopian tube (Oviduct) ✓ Correct
C. Ovary
D. Vagina
Solution: Fertilization occurs in the fallopian tube.
Q14 — easy
Embryo gets nourishment from mother's blood through specialized disc-like vascular tissue called:
A. Oviduct
B. Placenta ✓ Correct
C. Umbilical chord
D. Amnion
Solution: Placenta mediates nutrient/gas exchange between mother and fetus.
Q15 — easy
Surgical contraceptive method in human males involving cutting and tying vas deferens is:
A. Tubectomy
B. Vasectomy ✓ Correct
C. Copper-T
D. Oral pills
Solution: Vasectomy blocks sperm transport in males.