question_answer 14)

  Chemosynthetic bacteria obtain energy from (a) sun                               (b) infrared rays (c) organic substances         (d) inorganic chemicals

Answer:

                  (d) In Inorganic Chemicals Chemosynthetic bacteria were the first organism on earth synthesise their own food by obtaining energy from chemicals like , etc. Photosynthetic bacteria have taken their origin from Chemosynthetic bacteria. Sun, infrared rays and organic substances are not used as the sources of energy for Chemosynthetic bacteria.