The Excretory System: Grade 9 Science
Explore the structure and function of the human excretory system, focusing on the kidneys, nephrons, and the process of urine formation.
Includes
Standards
Topics
The Excretory System
Name:
Date:
Score:
Read each question carefully and provide your best answer. For multiple choice questions, circle the correct option. For fill-in-the-blanks, complete the sentence with the appropriate term. Show your work for short answer questions.
1. Which of the following is NOT a primary organ of the excretory system?
Kidneys
Lungs
Skin
Liver
2. The functional unit of the kidney responsible for filtering blood is called the:
Ureter
Nephron
Bladder
Urethra
3. The two main processes involved in urine formation are glomerular filtration and tubular .
4. The transport urine from the kidneys to the urinary bladder.
5. Excess water, salts, and urea are removed from the body by the system.
6. Label the indicated parts of the kidney cross-section:
A:
B:
C:
7. Briefly explain the role of the excretory system in maintaining homeostasis.
8. The liver is not considered part of the excretory system because it does not produce urine.
True
False
9. Reabsorption occurs primarily in the Bowman's capsule.
True
False
Related Worksheets
Chemistry of Life Worksheet
Explore the fundamental chemical building blocks of life with this Grade 9 science worksheet on the Chemistry of Life, covering macromolecules, enzymes, and nucleic acids.
Radioactivity and Wildlife Worksheet
Explore the effects of radioactivity on wildlife and ecosystems with this Grade 9 science worksheet, covering radiation types, exposure, and environmental impact.
Blood Glucose Regulation Worksheet
A Grade 9 Science worksheet focusing on the mechanisms of blood glucose regulation, including the roles of insulin and glucagon, and the organs involved.
Biological Molecules Worksheet
Explore the four major classes of biological molecules: carbohydrates, lipids, proteins, and nucleic acids, and their roles in living organisms.
Enzyme Activity Worksheet
Explore the factors affecting enzyme activity, including temperature, pH, and substrate concentration, with this Grade 9 science worksheet.
Human Skull Anatomy Worksheet
A Grade 9 science worksheet on the anatomy and functions of the human skull, covering its bones, protective role, and key features.
Glucose Regulation Worksheet
A Grade 9 Science worksheet focusing on the biological processes of glucose regulation, including the roles of insulin, glucagon, and the pancreas.
Fermentation Fundamentals
Explore the basic principles of fermentation, including its types, processes, and applications in this Grade 9 science worksheet.