Question

Deep sea hydrothermal vents are habitats where the primary producers are

• A. Organotrophic bacteria
• B. Chemolithotrophic bacteria
• C. Chemoorganotrophs
• D. Methylotrophs

Hint:

Chemolithotrophs use inorganic chemicals as an energy source instead of sunlight.

Answer 1

The Correct Option is B

Step 1: Deep sea hydrothermal vents are located in regions where sunlight does not reach.
Step 2: In the absence of sunlight, photosynthesis is not possible.
Step 3: Primary producers in these ecosystems obtain energy by oxidizing inorganic substances such as hydrogen sulfide.
Step 4: Such organisms are known as chemolithotrophic bacteria. Hence, the primary producers in deep sea hydrothermal vents are chemolithotrophic bacteria.