PTS Biology Mcqs Online Test 6

The arrangement of ________ speaks of the division of labour within cell?

In which animal respiratory surface are found in more than one organ?

What is the branch of biology in which structure and function of tissues are studied?

The heart is enclosed in a membrane called?

Biological organization is?

From right ventricle blood is pushed into?

Communities are ________ collection of organisms?

Biometry is the application of_______ in biology?

The number of species of organisms currently known to science is?

Operculum is present in?