Waec Biology 2019 Past Questions and Answers

Question 36:

• WAEC 2019

The heart can beat continuously without being fatigued because it is composed of ____________

A. Skeletal muscles
B. Smooth muscles
C. Cardiac muscles
D. Renal muscles

Question 37:

• WAEC 2019

The products of tissue respiration are ____________

A. Glucose, oxygen, and water
B. Oxygen, water, and energy
C. Glucose, carbon dioxide, and energy
D. Water, carbon dioxide, and energy

Question 38:

• WAEC 2019

Excretory products in plants responsible for the discoloration of flowers are called ___________

A. Alkaloids
B. Tannins
C. Anthocyanins
D. Resins

Question 39:

• WAEC 2019

The process of maintaining a steady internal environment is known as ____________

A. Osmoregulation
B. Equilibration
C. Homeostasis
D. Plasmolysis

Question 40:

• WAEC 2019

Which of the following statements is not true about hormones?

A. Their responses are voluntary
B. They may affect more than one target organ
C. They are chemical messengers in animals
D. They are transported by the blood to the target organs