In the adult frog gaseous exchange takes the

A. buccal cavity, skin and lungs

B. buccal cavity, skin and spiracles

C. gills, skin and buccal cavity

D. tympanic membrane, lungs and gills

The process of regulating the amount of water and solutes in the body fluids is called

A. osmosis

B. diffusion

C. osmoregulation

D. homeostasis

The presence of glucose in the urine of a patent is an indication of malfunctioning of the

A. pancreas

B. gall bladder

C. liver

D. spleen

Which of the following statements is not true about hormones?

A. Hormones are manufactured in ductless glands and poured straight into the blood stream

B. Hormones are carried by the blood plasma to the required Target organs

C. Hormonal responses are usually instant and electrical

D. Once the effects of hormones are over, they are inactivated and excreted from the body

Which of the following actions is note function of adrenaline? It increases

A. body blood sugar by conversion of liver glycogen into glucose

B. muscular power and resistance to fatigue

C. the rate of heat

D. the dilation of the pupils of the eye

Plant hormones include the following except

A. insulin

B. auxin

C. cytokinin

D. gibberellin

The passage of nerve impulse across a synapse is facilitated by the secretion of

A. acetylcholine

B. thyroxin

C. insulin

D. progesterone

The part of the brain which controls and coordinates body posture is the

A. cerebellum

B. hypothalamus

C. medulla oblongata

D. pons varolii

Which of the following processes is not an example of a reflex ac ion?

A. Blinking of the eye

B. Reading

C. Beating of the heart

D. Sneezing

The eyes can properly focus images of objects of various distances on the retina by a process called

A. refraction

B. reflection

C. accommodation

D. correction