Biology Quiz: Excretion Process

What is the main purpose of the excretion process in living organisms?

• To produce energy

• To get rid of waste products

• To regulate body temperature

• To aid in digestion

Which of the following is considered an excretory material that leaves the body through the plasma membranes?

• Vitamins and minerals

• Proteins and carbohydrates

• Carbon dioxide and water

• Fats and sugars

In which form do aquatic animals primarily excrete nitrogenous wastes?

• Ammonia

• Urea

• Carbon dioxide

• Uric acid

What are the important excretory organs in the bodies of higher animals?

• Two lungs and two kidneys

• Two hearts and a liver

• One brain and two eyes

• Four stomachs and a bladder

Which layer of the skin is responsible for protecting the body against the invasion of microbes?

• Hair follicle

• Fatty layer

• Inner layer

• Surface layer

What is the function of the sebaceous (fat) gland in the skin?

• To produce sweat

• To sense touch and pain

• To regulate body temperature

• To produce an oily secretion

What causes an increase in the rate of sweating in the human body?

• Physical activities

• Constriction of blood capillaries

• Decreased body temperature

• Cold weather

Which organ is considered an excretory organ based on its function?

• Stomach

• Liver

• Heart

• Lungs

What is the primary role of the sweat gland in the skin?

• To produce an oily secretion

• To sense temperature changes

• To regulate body temperature

• To produce hair

Why is it important to remove the remaining wastes from sweat continually?

• To avoid foul odour

• To avoid skin dryness

• To increase body temperature

• To prevent hair loss