7th Class Science Sample Paper Science Sample Paper - 9

  • question_answer
    Explain the terms, autotrophs, heterotrophs and saprotrophs.

    Answer:

    Autotrophs: Such living organisms which are capable of manufacturing their own food by the process of photosynthesis by using \[C{{O}_{2}}\], water and light, are called autotrophs e.g., green plants.
    Heterotrophs: Such organisms which are not capable of manufacturing their own food and depend for their food on other organisms are known as heterotrophs.                                                                               
    Saprotrophs: Such heterotrophs which obtain their nutrition from dead or decaying organic material are called saprotrophs.      


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