Which of the following is a metabolic waste product?

1.  Tears
2.  Saliva
3.  Mucus
4.  Faeces
5.  Urine

The breakdown of glycogen into glucose in the body is due to the action of:

1.  insulin
2.  adrenaline
3.  secretion
4.  glucagon
5.  gastric

Bowmans capsule is found in which of the following organs?

1.  Liver
2.  Pancreas
3.  Kidney
4.  Spleen
5.  Heart

Which of the following is not an excretory product in plants?

1.  Tannins
2.  Carbon Dioxide
3.  Urea
4.  Calcium oxalate
5.  Latex

An individual who is riding a bicycle can waste a lot of water through sweating. Which of the following organs is responsible for the water loss?

1. Stomach 
2. Kidney 
3. Skin 
4. Liver 
5. Lungs

Which of the following is the excretory organ in human?

1. Mouth 
2. Kidney 
3. Pancreas 
4. Stomach 
5. Anus.         

The kidney in animals is mainly responsible for

1.  excretion
2.  digestion
3.  transportation
4.  respiration
5.  absorption.

Bowmans capsule in the kidney functions as a

1.  filter
2.  sanction
3.  transmitter
4.  sponge pump
5.  absorber

  Consider that you are a medical doctor and you have received a patient whose investigation has diagnosed kidney stones. Suggest to the patient three possible causes and three control measures for kidney stones.

With the aid of a well labelled diagram, describe the urinary system and explain the process of urine formation in human beings.

Briefly explain the importance of the four excretory products of plants.

How do plants get rid of excretory products? Briefly explain three ways.

How is the human urinary system adapted to perform its roles effectively'? Give four points.