OTS Biology Mcqs Online Test 6

Communities are ________ collection of organisms?

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

The heart is enclosed in a membrane called?

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

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

Biometry is the application of_______ in biology?

Biological organization is?

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

Operculum is present in?

From right ventricle blood is pushed into?