Question

An __________ is a group of organs.

(a) Tissue

(b) Cell

(c) Nucleus

(d) Organ system​

Answer 1

Answer:

(d)An Organ system is a group of organs.

Answer 2

Answer:

An $\underline {\red {\bf {Organ\ system}}}$ is a group of organs.

Explanation:

Cells are the basic structural and functional unit of life. All the living processes take place at the cell level and all the living organisms are made up of cells, which has a basic structure.

Many similar cells come together to form a tissue. The group of tissues performing a similar function form an organ. Many organs together form the organ system. And a group of these organ systems forms the body of a living organism.