Page 39 - Biology for Advanced Secondary Schools Teachers Guide Form Five

Biology for Advanced Level Secondary Schools

4. Assign students to do Exercise 7.2 from the Student’s Book.
Mark the exercise and provide feedback.

7.3 Excretion
FOR ONLINE READING ONLY
Teaching steps

1. Guide students though question and answers to explain the
concept of excretion in animals. Make clarification where
necessary.

2. Guide students through think-ink-share to brainstorm on the
general functions of the kidneys. Guide them to share their
ideas in class.

3. Guide students to search from the internet sources the images
or video showing structure of the mammalian nephron. Ask
them to describe what they have observed.

4. Ask students to search from the internet sources the videos or
simulations to explore the mechanisms of urea formation in
mammals. Ask them to note what they have observed.

5. Invite a health specialist to explain urinary disorder in human
beings (uremia, renal failure or kidney failure, kidney stones,
urinary tract infections (UTI), urinary tract obstruction and
diabetes insipidus) to the students. Ask students to write causes,
symptoms and control measures.
6. Assign students to do Exercise 7.3 from the Student’s Book.
Mark the exercise and provide feedback.

7.4 Osmoregulation
Teaching steps

1. Guide students to search from library and internet sources the
information about osmoregulation in marine elasmobranchs
and osmoregulation in mammals. Ask them to write short notes.

Form Five Teachers Guide
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