In the mammalian male reproductive system, the part that serves as a passage for both urine and semen is the

A. urethra

B. urter

C. bladder

D. seminal vesicle

In plants which of the following is required in minute quantities for growth?

A. Copper

B. Potassium

C. Phosphorus

D. Sodium

Which of the following organisms is both parasitic and autotrophic?

A. Sundew

B. Loranthus

C. Rhizopus

D. Tapeworm

A function of the hydrochloric acid produced in the human stomach during digestion is to

A. neutralise the effect of bile

B. coagulate milk protein and emulsify fats

C. stop the action of ptyalin

D. break up food into smaller particles

Which of the following is a polysaccharide?

A. Glucose

B. Sucrose

C. Maltose

D. Cellulose

In the kidney of mammals, the site of ultrafiltration is the

A. uriniferous tubule

B. Bowman's capsule

C. loop of Henle

D. renal tubule

Which of the following is involved in secondary thickening in plants?

A. Collenchyma and xylem cells

B. Vascular cambium

C. Cork cambium and sclerenchyma

D. Vascular cambium and cork cambium

An example of a fruit that develops from a single carpel is

A. okro

B. tomato

C. bean

D. orange

Plant growth can be artificially stimulated by the addition of

A. gibberellin

B. kinin

C. abscisic acid

D. ethylene

The autonomic nervous system consists of neurons that control the

A. voluntary muscles

B. heart beat

C. tongue

D. hands