What is the process by which certain microbes produce sugars (food) using energy released from chemical reactions, instead of sunlight?

Correct option is D

Correct Answer: (D) Chemosynthesis
Explanation:
→ Chemosynthesis is the biological process through which autotrophic microbes convert carbon molecules into organic matter using inorganic chemical energy.
→ Unlike solar-driven plants, these specialized organisms oxidation-process chemicals like hydrogen sulfide or methane to power their primary food production.
→ This localized phenomenon forms the bedrock of unique, deep-sea ecosystems found around deep ocean hydrothermal vents where sunlight cannot reach.
→ Studying these metabolic pathways expands our geographical understanding of biosphere limits and the diverse energy flows within remote ecosystems.
Information Booster:
→ Chemosynthetic bacteria act as the critical primary producers in pitch-black deep sea environments like oceanic trenches.
→ They frequently form close symbiotic relationships with deep-sea creatures such as giant tube worms and deep-water clams.
→ Common chemical compounds utilized in these synthesis reactions include ammonia, molecular hydrogen, and iron variants.
→ This biological mechanism challenges the traditional view that all complex life on Earth must depend entirely on solar radiation.