CBSE  /  Class 10  /  Science  /  How do Organisms Reproduce?

  • 1. 
    The ability of a cell to divide into several cells during reproduction in Plasmodium is called

  • budding
  • reduction division
  • binary fission
  • multiple fission

  • 2. 
    The correct sequence of reproductive stages seen in flowering plants is

  • gametes, zygote, embryo, seedling
  • zygote, gametes, embryo, seedling
  • seedling, embryo, zygote, gametes
  • gametes, embryo, zygote, seedling

  • 3. 
    The number of chromosomes in parents and offsprings of a particular species remains constant due to

  • doubling of chromosomes after zygote formation
  • halving of chromosomes during gamete formation
  • doubling of chromosomes after gamete formation
  • halving of chromosomes after gamete formation

  • 4. 
    Factors responsible for the rapid spread of bread mould on slices of bread are

  • (i) and (iii)
  • (ii) and (iv)
  • (i) and (ii)
  • (iii) and (iv)

  • 5. 
    Length of pollen tube depends on the distance between

  • pollen grain and upper surface of stigma
  • pollen grain on upper surface of stigma and ovule
  • pollen grain in anther and upper surface of stigma
  • upper surface of stigma and lower part of style

  • 6. 
    Which of the following statements are true for flowers?

  • (i) and (iv)
  • (ii) and (iii)
  • (i) and (iii)
  • (ii) and (iv)

  • 7. 
    Which among the following statements are true for unisexual flowers?

  • (i) and (iv)
  • (ii), (iii) and (iv)
  • (iii) and (iv)
  • (i), (iii) and (iv)

  • 8. 
    Which among the following diseases is not sexually transmitted?

  • Syphillis
  • Hepatitis
  • HIV – AIDS
  • Gonorrhoea

  • 9. 
    In human males, the testes lie in the scrotum, because it helps in the

  • process of mating
  • formation of sperm
  • easy transfer of gametes
  • all the above

  • 10. 
    In following Figure, the parts A, B and C are sequentially

  • cotyledon, plumule and radicle
  • plumule, radicle and cotyledon
  • plumule, cotyledon and radicle
  • radicle, cotyledon and plumule
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