De-oxygenated blood is transported to the lungs through the

A. renal vein

B. hepatic portal vein

C. pulmonary artery

D. pulmonary vein

One of the following is the unit of life

A. cell

B. tissues

C. organ

D. system

The following are examples of a true fruit, except

A. mango

B. oil palm

C. orange

D. pineapple

The vector that transmit trypanosome is the

A. butterfly

B. housefly

C. mosquito

D. tsetse fly

The following are ductless glands except

A. adrenal

B. pancreatic

C. parathyroid

D. salivary

White blood cells are also known as

A. erythrocytes

B. leucocytes

C. lymphocytes

D. phagocytes

The removal of remnant particles of digestion from the body is called

A. assimilation

B. egestion

C. elimination

D. excretion

Enzyme ptyalin acts on starch in the

A. oesophagus

B. large intestine

C. mouth

D. stomach