Single-celled algae and multicellular plants
both perform photosynthesis.
photosynthesis is the process by which both
types of organisms
a. make food.
b. get rid of wastes.
c. extract energy from food.
d. reproduce.

The correct option is A) make food.

Explanation:

Photosynthesis can be described as a process by which organisms like plant and some algae make their own food. They use light energy from the sun to convert carbon dioxide and water into glucose and oxygen. Oxygen is the by- product of this reaction. Hence, option A is correct.

Other options are wrong because photosynthesis is not a process by which energy can be extracted from food or it is not a process by which excretion of waste occurs. Neither is it a process of reproduction.

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.