Question

Describe a minimum of THREE contrasts between photosynthesis and chemosynthesis

Answer 1

Photosynthesis and chemosynthesis are two processes by which autotrophs produce food, but they differ in several key ways: energy source, end products, and organisms involved.

Step-by-step explanation:

Photosynthesis and chemosynthesis are two processes by which autotrophs produce food, but they differ in several key ways.

1. Energy source: Photosynthesis uses sunlight as an energy source, while chemosynthesis uses inorganic molecules such as hydrogen sulfide or methane as an energy source.
2. End products: Photosynthesis produces glucose and oxygen as end products, while chemosynthesis produces organic molecules and sometimes sulfur or ammonia as end products.
3. Organisms involved: Photosynthesis is carried out by plants and some bacteria, while chemosynthesis is carried out by bacteria and archaea in extreme environments such as deep sea hydrothermal vents.