Life Processes - Excretion

Grade 9 Science — Life Processes - Excretion: 25 practice questions with instant scoring and explanations.

1. The functional unit of the kidney is the:
2. The glomerulus is a network of:
3. Ultrafiltration in the kidney occurs at:
4. In ultrafiltration, which of the following does NOT pass into the Bowman's capsule?
5. The Loop of Henle functions to:
6. Selective reabsorption occurs in:
7. Which substance is completely reabsorbed from the filtrate during normal conditions?
8. The hormone that regulates water reabsorption in the kidney is:
9. When body water content decreases, ADH secretion:
10. Aldosterone regulates:
11. Normal urine does NOT contain:
12. Kidney dialysis is required when:
13. In haemodialysis, the dialysing fluid does NOT contain:
14. The purpose of dialysis is to:
15. Excretion in plants occurs through:
16. Excess salts in plants are removed through:
17. Guttation is the process of:
18. Lenticels in plants function to:
19. The fluid in the Bowman's capsule is called:
20. The rate of glomerular filtration (GFR) in humans is approximately:
21. The collecting duct is permeable to water when:
22. Which of the following is a symptom of kidney dysfunction?
23. Peritoneal dialysis works by using:
24. The maximum concentration of urine is maintained by the action of:
25. Creatinine in the urine comes from: