PTS Biology Mcqs Online Test 6

The heart is enclosed in a membrane called?

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

Communities are ________ collection of organisms?

Biological organization is?

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

Biometry is the application of_______ in biology?

Operculum is present in?

From right ventricle blood is pushed into?

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

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