Question

P and Q are two gaseous components of air. Both can dissolve in the water of rivers, oceans and lakes. The organisms- X, living in water use gas- P dissolved in water to make their food. Whereas organisms- Y use gas- Q for its survival

A Name the organisms- X and Y.
B) Name the process by which X make food.

Answer 1

A) Organisms X and Y are:

A) Organism X: Aquatic Plants (or any photosynthetic organisms living in water)

B) Organism Y: Aquatic Animals (or any organisms that rely on oxygen dissolved in water for survival)

B) The process by which Organism X makes food is:

B) Photosynthesis