Question

Find the correct statement.


a) In multi-cellular organisms, various body parts have specialised in the functions they

perform.


b) In single-celled organisms, no specific organs are available to perform different functions.


c) Both a and b


d) None of them​

Answer 1

Answer:

both a and b. option ç) is the answer

Answer 2

The correct statement is c) Both a and b

• In multicellular organisms there is a division of labour, that is there are specific group of cells or tissues that perform a particular function. Tissues coordinate to form organs that perform different activities like respiration, digestion, blood circulation etc. Each organ coordinate to form a organ system and this way a multicellular body functions.
• In unicellular organisms there's no division of labour. Since the cell body has a simple organization most of the activities are performed my the plasma membrane itself. In such organisms simple processes like diffusion can meet the requirement of body.