PTS Biology Mcqs Online Test 6

The heart is enclosed in a membrane called?

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

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

Biometry is the application of_______ in biology?

Operculum is present in?

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

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

Communities are ________ collection of organisms?

Biological organization is?

From right ventricle blood is pushed into?