Page 107 - Biology_Form_3

Biology for Secondary Schools

7. Prevention and management of
excretory system disorders involve Revision exercise 4
healthy lifestyle choices and medical Choose the most correct answer.
interventions. Staying hydrated, 1. Which of the following is among the
maintaining a balanced diet, reducing human excretory organs?
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salt and protein intake, and avoiding (a) Stomach
harmful substances like alcohol and
tobacco can help keep excretory (b) Lungs
organs healthy. Medical treatments (c) Small intestine
such as dialysis or kidney transplants (d) Pancreas
can assist individuals with severe 2. The major excretory products in
kidney conditions. animals are__________.

8. Generally, excretion is essential for (a) carbon dioxide, excess water and
removing harmful substances from urea
the body and maintaining internal (b) excess water, protein, glucose and
balance. The coordinated function urine
of the kidneys, lungs, skin, and (c) sweat, carbon dioxide, urea and
liver ensures that metabolic waste oxygen
is efficiently eliminated, preventing (d) Latex, bile, excess water and urea
toxicity and promoting overall health. 3. One of the most important functions
Proper care of these organs through of excretion in the human body is
lifestyle adjustments and early to__________.
medical intervention can help prevent
complications related to excretion. (a) Maintain homeostatic conditions
in the body
(b) Reduce the amount of blood sugar
in the body
(c) Remove extra food from the
stomach
(d) Help the digestion process to
proceed
4. The following are waste products
excreted through the skin, except
(a) water
(b) lactic acid

(c) carbon dioxide
(d) urea

100 Student’s Book - Form Three

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BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 100
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 100 23/10/2025 11:52:45 KAMISHNA

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