Biological Classification And System Of Classification Question 304

Question: Assertion : None autotrophic bacteria carry out chemosynthesis. Reason : Chemosynthetic bacteria trap the small amount of energy released from inorganic compound?s oxidation to use in the reactions that synthesize carbohydrates.

Options:

A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C) If the assertion is true but the reason is false

D) If both the assertion and reason are false

Show Answer

Answer:

Correct Answer: D

Solution:

Chemosynthetic bacteria are without photosynthetic pigments.

For the synthesis of their own organic food, (carbohydrates), they obtain carbon from $ CO_2 $ of the atmosphere, necessary energy from oxidation of inorganic or organic compounds, such as hydrogen sulphide $ (H_2S), $ ferrous compounds $ (F{e^{2+}}), $ molecular hydrogen $ (H_2) $ ammonia $ (NH_3) $ and nitrites $ (NO_2-).$