How do Organisms Reproduce?

This chapter has

How do Organisms Reproduce? — solved practice questions

8 Class 10 Science questions with step-by-step solutions. Attempt each, then reveal the answer.

1. Q1easy

   The process by which organisms produce offspring similar to themselves is called:

   • Agrowth
   • Breproduction
   • Cnutrition
   • Dexcretion
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   Correct answer: (B) reproduction

   Reproduction is the biological process by which new individuals are produced, ensuring continuity of life.

2. Q2easy

   Reproduction that involves only one parent and produces genetically identical offspring is:

   • Aasexual reproduction
   • Bsexual reproduction
   • Cvegetative propagation
   • Dpollination
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   Correct answer: (A) asexual reproduction

   Asexual reproduction involves a single parent; offspring are clones (genetically identical).

3. Q3easy

   Which of the following is an example of binary fission?

   • AAmoeba
   • BHydra
   • CSpirogyra
   • Dfern
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   Correct answer: (A) Amoeba

   Amoeba divides into two equal halves — binary fission.

4. Q4easy

   Budding is a method of asexual reproduction seen in:

   • AAmoeba
   • BHydra
   • CParamecium
   • DPlasmodium
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   Correct answer: (B) Hydra

   Hydra reproduces by budding — small outgrowths (buds) develop and detach as new individuals.

5. Q5medium

   Regeneration is the ability of:

   • AAmoeba to divide
   • BHydra to bud
   • CPlanaria to grow from fragments
   • Dyeast to bud
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   Correct answer: (C) Planaria to grow from fragments

   Planaria (flatworm) can regenerate a whole organism from a small fragment — a unique ability.

6. Q6easy

   The male reproductive organ in flowering plants is the:

   • Apistil
   • Bstamen
   • Cpetal
   • Dsepal
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   Correct answer: (B) stamen

   The stamen (comprising anther + filament) is the male organ; pollen is produced in the anther.

7. Q7easy

   In humans, the organ where the foetus develops is the:

   • Aovary
   • Bfallopian tube
   • Cuterus
   • Dvagina
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   Correct answer: (C) uterus

   The uterus is where the fertilised egg implants and the foetus develops.

8. Q8hard

   Double fertilisation is a feature of:

   • Agymnosperms
   • Bangiosperms
   • Cbryophytes
   • Dalgae
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   Correct answer: (B) angiosperms

   In flowering plants (angiosperms), one sperm fertilises the egg (→ zygote) and another fuses with the polar nuclei (→ endosperm): double fertilisation.

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