PTS Biology Mcqs Online Test 6

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

From right ventricle blood is pushed into?

Operculum is present in?

Biometry is the application of_______ in biology?

The heart is enclosed in a membrane called?

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

Communities are ________ collection of organisms?

Biological organization is?

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

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