PTS Biology Mcqs Online Test 6

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

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

Biometry is the application of_______ in biology?

Operculum is present in?

Communities are ________ collection of organisms?

Biological organization is?

The heart is enclosed in a membrane called?

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

From right ventricle blood is pushed into?

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