Nitrogen is present in___________?

A. Carbohydrates
B. Proteins
C. Lipids
D. Carbonates

Biological organization is_____________?

A. Simple
B. Advance
C. Complex
D. Highly complex

Operculum is present in_____________?

A. Bony fish
B. Sea fish
C. Cartilaginous fish
D. None of these

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

A. Molecule
B. Subatomic particles
C. Atoms
D. Organelles

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

A. Birds
B. Human
C. Fish
D. Frog

Communities are ________ collection of organisms?

A. Static
B. Dynamic
C. May be static or dynamic
D. None of these

The heart is enclosed in a membrane called________?

A. Pleura
B. Pericardium
C. Peritoneum
D. Epithelium

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

A. 3500000
B. 35000
C. 2500000
D. 25000000

From right ventricle blood is pushed into?

A. Pulmonary trunk
B. Brain
C. Aorta
D. Body

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

A. Cell biology
B. Taxonomy
C. Histology
D. Morphology