Question

Q. Which among the following are categorised under autotrophs?

Select the correct answer using the code given below.

• A.
  2 and 4 only
• B.
  1 and 3 only
• C.
  2, 3 and 4 only
• D.
  1, 2, 3 and 4

Answer 1

The correct option is B

1 and 3 only
Explanation:

Statements 1 and 3 are Correct: Autotrophs comprise those species which produce their food themselves. These include: Phototrpohs - which prepare food through photosynthesis using solar radiation and Chemotrophs - which make food through chemosynthesis from inorganic substances by oxidation.

Statements 2 and 4 are incorrect: Saprophytes and Parasites are Heterotrophs - depend on other living organisms for food.