The xylem elements perform the function of transport but they also help to support plants because they

A. are internally located

B. are tubular

C. have rigid thick walls

D. constantly absorb water

Excessive bleeding from an injury may be due to lack of vitamin

A. A

B. B

C. C

D. K

The hepatic portal vein is often heavily loaded with food-nutrients because it carries blood

A. directly from the heart

B. from the liver to the heart

C. from the small intestine to the liver

D. from the liver to join the posterior vena cava

The products of respiration are

A. nitrogen and water

B. nitrogen and carbon dioxide

C. water and oxygen

D. carbon dioxide and water

Green plants lose water to the atmosphere through the process of

A. respiration

B. photosynthesis

C. transpiration

D. translocation

The body temperature of a mammal has to be maintained at a fairly constant level because

A. excessive heat is continually lost by the body to the environment

B. their body temperature is always higher than that of the environment

C. evaporation of sweat cools the body

D. metabolic activities function best at certain temperature

A urine sample of a patient, tested with Benedict/Fehling solution, gave an orange colored precipitate,
indicating the presence of

A. glucose

B. sucrose

C. lactose

D. maltose

Which hormonal deficiency is likely to cause an accumulation of reducing sugar in the urine?

A. thyroxine

B. insulin

C. secretin

D. testosterone

Which of the following structures occupies the neural canal of the vertebral column?

A. cerebellum

B. hypothalamus

C. medulla oblongata

D. spinal cord

The structure labelled l in the diagram above is the

A. cerebellum

B. cerebrum

C. olfactory lobe

D. medulla oblongata