Chapter 7: How do Organisms Reproduce? — Online MCQ Test
SCIENCE · Grade 10 · CBSE(NCERT)
Practice Chapter 7: How do Organisms Reproduce? with a free chapter-wise online MCQ test.
This chapter covers: Asexual reproduction Sexual reproduction Binary fission Budding Vegetative propagation Pollination Fertilisation Embryo Puberty Reproductive health.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 7: How do Organisms Reproduce? — Important Questions & Answers
In Amoeba, reproduction usually takes place by which method?
- A. Binary fission
- B. Budding
- C. Fragmentation
- D. Spore formation
Answer: A. Binary fission
Amoeba is a unicellular organism that divides into two daughter cells by binary fission.
Amoeba is a unicellular organism that divides into two daughter cells by binary fission.
The transfer of pollen grains from the anther to the stigma is called:
- A. Fertilisation
- B. Pollination
- C. Germination
- D. Implantation
Answer: B. Pollination
Pollination is the process in which pollen grains are transferred from the anther to the stigma of a flower.
Pollination is the process in which pollen grains are transferred from the anther to the stigma of a flower.
A gardener wants to grow a plant that has the same desirable traits as the parent plant. Which method is most suitable?
- A. Growing from seeds after cross-pollination
- B. Vegetative propagation by cuttings
- C. Allowing random pollination
- D. Using only fertilised ovules
Answer: B. Vegetative propagation by cuttings
Vegetative propagation produces plants genetically similar to the parent, helping maintain desirable traits.
Vegetative propagation produces plants genetically similar to the parent, helping maintain desirable traits.
A student observes that a single-celled organism first divides its nucleus many times and then divides its cytoplasm to form many daughter cells at once. Which process is most likely occurring?
- A. Binary fission
- B. Multiple fission
- C. Budding
- D. Regeneration
Answer: B. Multiple fission
In multiple fission, the nucleus divides repeatedly and many daughter cells are produced simultaneously, as seen in Plasmodium.
In multiple fission, the nucleus divides repeatedly and many daughter cells are produced simultaneously, as seen in Plasmodium.
A plant produced by vegetative propagation and a plant produced by sexual reproduction are compared. Which statement is most accurate?
- A. Vegetatively propagated plants are usually genetically similar to the parent, while sexually produced plants may show more variation.
- B. Vegetatively propagated plants always have more variation than sexually produced plants.
- C. Sexually produced plants never contain DNA from parents.
- D. Both methods always produce genetically identical offspring.
Answer: A. Vegetatively propagated plants are usually genetically similar to the parent, while sexually produced plants may show more variation.
Vegetative propagation is asexual and generally produces clones, while sexual reproduction creates variation through fusion of gametes.
Vegetative propagation is asexual and generally produces clones, while sexual reproduction creates variation through fusion of gametes.