Excretion and Osmoregulation GCE Revision questions Biology o level

Excretion and Osmoregulation GCE Revision questions Biology

1. (a)

• Define the term excretion
• How is it important to living organisms.

(b) State the excretory products, their origins, and way of elimination of this products in mammals.

2. (a) What is a nephron?

(b) With the aid of a well labelled diagram of a nephron, describe how it carries out its function of excretion.

(c) How is the osmoregulation and Excretion carried out in a named protozoan?

3. (a) What is osmoregulation?

(b) Describe the osmoregulation rule of a mammalian kidney.

(c) How is the water level in both fresh and marine amoeba maintained?

4. (a) Draw a large labelled diagram of the urinary system

(b) State the function of each part labelled.

(c) Outline the formation of urine

5. (a)

• Name 3 structures used by flowering plants in excretion.
• Name the excretory products of plants an how they are removed 

(b) Why do plants not produce a lot of excretory products?

6. (a) With the aid of a well labelled diagram, describe the structure of the kidney.

(b)

• Name four organs used by mammals in excretion
• List 4 excretory products of mammals and how they are eliminated.

(c) Describe the process of ultrafiltration in the kidney.

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Revision questions biology ordinary level for Students.

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Use of Biology revision questions. 

Above questions are revision questions for "Excretion and osmoregulation" for ordinary level (o level). 

Candidates can use the above questions to prepare for the Cameroon General certificate of examination board GCE 

The questions are not only for Cameroonians preparing for the gce but they are revision questions for all students world wide preparing for the GCE or any other Examination.