Question

How is photoautotroph different from chemoautotroph?

Answer 1

Photoautotroph:

These organisms synthesize their food by the process of photosynthesis, using sunlight.

Chemoautotroph:

These organisms synthesize their food by the process of chemosynthesis, using chemical energy.

Photoautotroph	Chemoautotroph
1. The main source of energy for these organisms is sunlight.	1. The main source of energy for these organisms is inorganic materials like hydrogen sulfide.
2. They grow on land and even in water, wherever they sunlight.	2. They live near active volcanoes, deep-sea hydrothermal vents, and places where sunlight cannot reach.
3. Examples- green plants, cyanobacteria, photosynthesizing algae, etc.	3. Examples- methanogenic bacteria, sulfur-oxidizing bacteria, etc.