Biometry is the application of_______ in biology?

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?

Biological organization is?

The heart is enclosed in a membrane called?

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

From right ventricle blood is pushed into?

Communities are ________ collection of organisms?

Operculum is present in?

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