Waec Biology Past Questions and Answers

Question 451:

• WAEC 1997

The part labelled I in the diagram is called

A. Stoma
B. Epidermis
C. Ienticel
D. Cortex
E. Parenchyma

Question 452:

• WAEC 1997

The malpighian tubule plays a major role in

A. Inspiration
B. Digestion
C. Secretion
D. Reproduction
E. Excretion

Question 453:

• WAEC 1997

Filtered blood from the kidney is carried back to the circulatory system
through the

A. Hepatic portal vein
B. Renal artery
C. Renal vein
D. Pulmonary vein
E. Vena cava

Question 454:

• WAEC 1997

The early removal of the pituary gland in animals may cause

A. Ceasation of growth
B. Gigantism
C. Poor mental development
D. Goitre
E. Inability to digest food

Question 455:

• WAEC 1997

A high concentration of auxin in the root will

A. Inhibit growth
B. Stimulate growth
C. Not affect growth
D. Cause the root to roth
E. Reduce water absorption