CXC Integrated Science exam guide: Section A: Excretion
Submitted by Kathy-ann Daniel on 30 September 2009 - 9:46pm
CXC Integrated Science exam guide: Excretion
CXC Integrated Science Exam Guide
Section A-The Organism
General objectives of the section:
Candidates should demonstrate an understanding of:
| 1. |
The interdependence of life processes;
|
| 2. |
The relationship between an organism and its environment;
|
| 3. |
The relationship between structure and function of an organism;
|
|
| Unit IV: Excretion |
|
Specific Objectives
Students should be able to: |
Explanatory notes
|
Suggested Practical Activities
|
|
1. Distinguish between excretion and ingestion
|
Excretion - definition necessary, (relationship to metabolism, excretory organs and products);
kidney - structure of tubule related to ultra-filtration (dialysis) and re-absorption; osmoregulation related to environmental factors;
plants - waste products, gaseous exchange and its importance, leaf fall/storage in bark.
|
|
|
2. Explain the mechanism of excretion by lungs, skin and kidneys;
|
Osmoregulatory function of kidneys; dialysis.
|
Examine diagrams/models of the skin and kidneys of man.
|
|
3. Identify the waste products of flowering plants and their methods of excretion.
|
Waste products of respiration and photosynthesis only |
|
| Go to Section A: unit VI: Coordination |
|
| |
|
Post new comment