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      Question

      Which of the following is/are considered as

      Autotrophs? 1. Green plants 2. Blue green Algae 3. Human beings 4. Cattle Select the correct answer using the code given below.
      A 1 only Correct Answer Incorrect Answer
      B 1 and 2 only Correct Answer Incorrect Answer
      C 2, 3 and 4 only Correct Answer Incorrect Answer
      D 1, 2 and 4 only Correct Answer Incorrect Answer

      Solution

      Autotrophs are the organisms, which produce their own food by fixing solar energy in the presence of abiotic substances. Green plants and Blue green algae are considered as autotrophs because they produce their own food whereas Human beings and cattle are considered as heterotrophic organism because they consume the food which is produced by producers or autotrophs.

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