Excretory System Worksheet

Given the QUESTION, identify the ANSWER
1. Tuft of capillaries inside the Malpighian body is known as
• Collecting ducts
• Glomerulus
• Nephron
• Renal artery

2. Formation of urea occurs in
• Liver
• Kidneys
• Small intestine
• Pancreas

3. Which of these is not a normal constituent of urine: sugar, urea or creatinine?
• Urea
• Creatinine
• Sugar

4. Which of these is not an excretory organ: intestine, lungs, thyroid or kidneys?
• Intestine
• Thyroid
• Lungs
• Kidneys

5. Main function of the _______ is to filter the wastes from the blood and excrete them in the form of urine.
• Kidneys
• Lungs
• Urinary Bladder
• Endocrine glands

6. Bag like structure in which urine is stored.
• Kidney
• Urinary Bladder
• Ureter
• Stomach

7. Which is not true regarding kidneys?
A. They do not have any capsule.
B. They are bean shaped and reddish brown in color.
C. Each kidney is divided into 2 parts - cortex and medulla.
D. They are the main excretory organs.
• A
• B
• C
• D

8. Which of these is not true -- A, B, C or D?
A. Kidney excretes urea.
B. A small fraction of CO2 is removed through the skin.
C. Small amount of salt is excreted through skin.
D. Feces is excreted through the anus.
• A
• B
• C
• D

9. Which of these is not a function of kidneys?
A. Maintenance of acid base balance.
B. Excretion of nitrogenous waste products.
C. Temperature regulation.
D. Maintenance of water balance.
• A
• B
• C
• D

10. Identify urethra in this diagram.

• 1
• 2
• 3
• 4

11. True or False: Malpighian body is a part of nephron.
• True
• False

12. True or false: Capsule in which glomerulus is enclosed is known as external capsule.
• True
• False

13. True or false: Kidneys contain 10-12 million nephrons.
• True
• False