SSC MTS EXAM

Detailed explanation-1: -Chemotrophs are organisms that obtain energy from chemical oxidation or the chemosynthesis. They cannot use sunlight as their energy source. Instead, they use inorganic or organic compounds and obtain the energy through oxidation.

Detailed explanation-2: -However, in environments where there is no sunlight and thus no plants, organisms instead rely on primary production through a process called chemosynthesis, which runs on chemical energy. Together, photosynthesis and chemosynthesis fuel all life on Earth.