Question

Explain why unucellular organisms such as paramecium lack complex organs for gaseous exchange (2 marks)

Answer 1

These organisms have a very simple body organisation. And the entire surface of pramecium is in contact with the environment. So specialised organs and tissues are not needed fir performing various body functions

Answer 2

Answer:

it's always in contact with air so it doesn't need any further tissues to do that so