The upper part of the trachea in mammals is called

A. palate

B. epiglottis

C. larynx

D. glottis

E. bronchus

Which of the following parts of the mammalian skin is directly is directly involved in excretion?

A. Sebaceous gland

B. Sweat gland

C. Hormy layer

D. Hair follicle

E. Malphigian layer

Kidney stone is a disease of the Kidney that result in the

A. blockage of the tubules by solid particles

B. passing out useful materials of the body fluid within the urine

C. presence of large quantity of water in urine

D. passing out hormones in the urine

E. prevention of urine production

The following are the activities of the liver except

A. production of heat

B. manufacture of bile

C. detoxication of alcohol and drugs

D. maintenance of osmotic balance

E. deamination of excess nitrogenous substance

Infective hepatitis is a disease of the

A. heart

B. kidney

C. liver

D. stomach

E. pancreas

The pituitary is regarded as the master gland because

A. it is locatd in the brain

B. its secretion are the most numerous

C. its secretion control other endocrine glands

D. it is the biggest endocrine gland

E. it controls the activities of the brain

Growing radicles of seddlings are

A. negatively phototropic

B. positively phototropic

C. negatively geotropic

D. negatively hydrotropic

E. positively phototactic

Over-secretion of thyroxin is likely to lead to

A. thinness in body

B. sluggishness

C. cretinism in infant

D. reduced metabolism

E. dwarfism

If a germinating seed is attached horizontally on a revolving klinostat, what will be the effect of the seedling after three days? The

A. plumule will curve vertically upward while the radicle will curve towards the ground

B. plumule and radicle will not show any curvature

C. radicle will curve towards the ground while the plumule will not show any curvature

D. plumule will curve vertically upward while the radicle will not show any curvature

E. plumule and radicle will curve towards the ground

The human skin is regarded as a sense organ because it

A. separates the body from the outside world

B. protects the body from cold and heat

C. regulates the water content of the body

D. has an outer layer of dead cells

E. has nerve endings