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

  • 1. 
    Reproduction is essential for living organisms in order to

  • keep the individual organism alive
  • fulfill their energy requirement
  • maintain growth
  • continue the species generation after generation

  • 2. 
    During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys

  • loss of milk teeth
  • increase in height
  • cracking of voice
  • weight gain

  • 3. 
    Offspring formed as a result of sexual reproduction exhibit more variations because

  • sexual reproduction is a lengthy process
  • genetic material comes from two parents of the same species
  • genetic material comes from two parents of different species
  • genetic material comes from many parents
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