Q. It is the branch of biology which deals with the study of relationship between organisms and their environment.

Explanation by: Admin

Ecology is the branch of biology that deals with the study of the relationship between organisms and their environment. It focuses on how organisms interact with each other and with their physical surroundings, including factors like climate, soil, water, and other living organisms.
Here’s why the other options are incorrect:
(B) Taxonomy: This is the branch of biology that deals with the classification, identification, and naming of organisms.
(C) Evolution: This is the study of how species change over time through processes like natural selection and genetic drift.
(D) Genetics: This is the study of heredity and the variation of inherited characteristics in organisms.
Therefore, ecology is the correct answer, as it specifically addresses the interactions between organisms and their environment.