The table lists descriptions of what happens in different human organs involved in excretion and homeostatic control.
Complete the table by giving the correct organ for each description.
The first one has been done for you.
| Description | Organ |
|---|---|
| stores urine prior to excretion | bladder |
| synthesises urea from toxic ammonia | |
| excretes carbon dioxide, a waste product of respiration | |
| contains nephrons that produce urine | |
| releases ADH into the blood to regulate water reabsorption |
Describe the process of selective reabsorption in the proximal convoluted tubule. Refer to the adaptations of the tubule cells and the transport mechanisms involved in your answer.
17 exam-style questions on Edexcel IGCSE Biology Excretion. Each one has a worked solution and a mark scheme showing where the marks go.