Question

In the depths of the Pacific and Atlantic Oceans, there exist hydrothermal vents that throw out toxic sulfur chemicals like Hydrogen sulfide and super hot water into the ocean. Some bacteria use these compounds to make their own food and store energy. The heat and sulfur compounds are generated by hot molten rock under the earth’s crust.

What kind of organisms are these bacteria?

• A. Autotrophs
• B. Heterotrophs
• C. Saprotrophs
• D. Decomposers

Answer 1

The correct option is A

Autotrophs

An organism which uses the chemical form of energy to make their own food are called as chemotrophs. The organisms, like plants, who use light energy to make food are known as autotrophs. Thus chemotrophs are in a way autotrophs because they can make their own food.