How Do Organisms Reproduce ?

20 Questions | Total Attempts: 14

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How Do Organisms Reproduce ?


Questions and Answers
  • 1. 
    Which of the following doesn't undergo vegetative propagation ?
    • A. 

      Raspberry

    • B. 

      Bougainvillea

    • C. 

      Turmeric

    • D. 

      Radish

  • 2. 
    The bud in hydra generally develops from the 
    • A. 

      Upper half

    • B. 

      Lower half

    • C. 

      Middle region

    • D. 

      No specific site

  • 3. 
    There is a greater possibility for evolution of a new species in organisms which reproduce by
    • A. 

      Binary fission

    • B. 

      Budding

    • C. 

      Fertilisation

    • D. 

      Regeneration

  • 4. 
    Assertion: plants raised by vegetative propagation can bear flower and seed earlier than those produced from seeds. reason: plants who lost capacity to bear viable seeds, can propagate through vegetative propagation.
    • A. 

      Both A and R correct and R is the correct  explanation of A.

    • B. 

      Only A correct.

    • C. 

      Both A and R are true but R is not the correct explanation of A. 

    • D. 

      Only R is correct.

  • 5. 
    DNA copies generated may not be ___________ but will be ______________  to the original.
    • A. 

      Similar, identical

    • B. 

      Identical, similar

    • C. 

      None of the above

  • 6. 
    Which of the following methods of asexual can be seen in Hydra and planaria ?
    • A. 

      Regeneration

    • B. 

      Fragmentation

    • C. 

      Budding

    • D. 

      Both i and iii  

  • 7. 
    Offspring formed by sexual reproduction has more variation than those formed by asexual reproduction because 
    • A. 

      Sexual reproduction is a lengthy process

    • B. 

      Gametes of parents have qualitatively different genetic composition

    • C. 

      Genetic material comes from parents belonging to two species. 

    • D. 

      Greater amount of DNA is involved in sexual reproduction.

  • 8. 
    There is no natural death in amoeba and bacteria because
    • A. 

      They cannot reproduce sexually

    • B. 

      They reproduce by binary fission

    • C. 

      Parental body is distributed among the offsprings

    • D. 

      They are microscopic

  • 9. 
    Identify the reproductive part of Rhizopus
    • A. 

      Sporangium

    • B. 

      Hyphae

    • C. 

      Sporangiophore

    • D. 

      None of these

  • 10. 
    The tubular thread like structures bearing sporangia in rhizopus are-
    • A. 

      Filaments

    • B. 

      Hyphae

    • C. 

      Rhizoids

    • D. 

      Roots

  • 11. 
    Which of the following is not correct about tissue culture ?
    • A. 

      Propagation through tissue culture can be carried through out the year

    • B. 

      An embryo which normally dies can be made to form a new plant.

    • C. 

      Large space is required for carrying out the method.

    • D. 

      It is also called micropropagation.

  • 12. 
    Technique used for ornamental plants
    • A. 

      Grafting

    • B. 

      Layering

    • C. 

      Tissue culture

    • D. 

      None of these

  • 13. 
    Which of the following is not a feature of binary fission ?
    • A. 

      It gives rise to two individuals.

    • B. 

      A part of the body, covering residual cytoplasm is left unused.

    • C. 

      Cytoplasm divides after each nuclear division

    • D. 

      It occurs under favourable conditions

  • 14. 
    Why does bread mould fail to grow on dry slice of bread ?
    • A. 

      It offers both nutrients and moisture to it

    • B. 

      It does not offers  moisture 

    • C. 

      It offers moisture but not nutrients

    • D. 

      It offers nutrients but not moisture

  • 15. 
    Which of the following trait can be acquired but not inherited ?
    • A. 

      Colour of eye

    • B. 

      Nature of hair

    • C. 

      Size of body

    • D. 

      Colour of skin

  • 16. 
    A trait in an organism is influenced by
    • A. 

      Paternal DNA

    • B. 

      Maternal DNA

    • C. 

      Both i and ii

    • D. 

      None of these

  • 17. 
    Fission occasionally occurs in which of the following multicellular organism ?
    • A. 

      Planaria

    • B. 

      Hydra

    • C. 

      Spirogyra

    • D. 

      Green algae

  • 18. 
    Stock and scion are involved in artificial propagation called 
    • A. 

      Grafting

    • B. 

      Tissue culture

    • C. 

      Layering

    • D. 

      Cutting

  • 19. 
    The two types of organisms which produce colonies by the process of budding are
    • A. 

      Hydra and corals

    • B. 

      Yeast and sponges

    • C. 

      Corals and sponges

    • D. 

      Hydra and yeast

  • 20. 
    ______________have limited power of regeneration as development and differentiation is controlled by nervous and hormonal systems.
    • A. 

      Higher animals

    • B. 

      Lower animals

    • C. 

      Sometimes lower animals 

    • D. 

      Both i and iii

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