Excretion Function of Living Organisms

Worked examples (6)

• 1Name the vessel for each job (Getting started)
• 2Identify the lumen on a diagram (Getting started)
• 3Explain the artery wall (Building confidence)
• 4Explain why veins have valves (Building confidence)
• 5Explain the capillary wall (Stretch)
• 6Compare an artery with a vein (Stretch)

Model answers (6)

• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style — extended open response
• ✓Model answer — 4WSD0/1B style — extended open response

Worked examples (6)

• 1Name the parts of the circulatory system (Getting started)
• 2Name a vessel from a description (Getting started)
• 3Define double circulation (Building confidence)
• 4Vessels of the kidney and liver (Building confidence)
• 5Explain the pulmonary exception (Stretch)
• 6Trace a drop of blood to the kidney (Stretch)

Model answers (6)

• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style — extended open response
• ✓Model answer — 4WSD0/1B style — extended open response

Worked examples (6)

• 1Define excretion (Getting started)
• 2Plant waste gases and where they leave (Getting started)
• 3The three organs of excretion (Building confidence)
• 4Where urea comes from (Building confidence)
• 5Compare excretion in a plant and a human (Stretch)
• 6Excretion is not egestion (Stretch)

Model answers (6)

• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style — extended open response
• ✓Model answer — 4WSD0/1B style — extended open response

Worked examples (6)

• 1State what is meant by a stimulus (Getting started)
• 2Name a receptor and an effector (Getting started)
• 3Put the response chain in order (Building confidence)
• 4Compare nervous and hormonal responses (Building confidence)
• 5Describe the response to a hot object (Stretch)
• 6Explain how growing towards light aids survival (Stretch)

Model answers (6)

• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style
• ✓Model answer — 4WSD0/1B style — extended open response
• ✓Model answer — 4WSD0/1B style — extended open response