Question

Identify the category in which the organisms using carbon dioxide and water for making food are placed.

Answer 1

such organism are called photo autotrophic organisms.

Answer 2

Answer:

The category in which ‘organisms’ producing food using water and carbon dioxide are placed is known as autotrophs.  

Explanation:

Autotrophs are manufacturers of their ‘own food’ and in the most other organisms are dependent on these producers for their food source. Autotrophs form the first trophic level in a food chain.  

There are three forms of autotrophs:

i)  Plants - They are photoautotrophs. Plants use light, carbon dioxide and water to “synthesize their food” in the presence of chlorophyll.

ii)  Bacteria - Certain bacteria, known as cyanobacteria or blue-green bacteria contain chlorophyll and are able to “synthesize their own food”.

iii)   Algae - Certain algae synthesize their own food and are a source of oxygen for the environment.