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?

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

Operculum is present in?

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?

Communities are ________ collection of organisms?

Biometry is the application of_______ in biology?

Biological organization is?