Grade 7 Science: Intake and Output
This worksheet covers the fundamental concepts of intake and output in biological systems, focusing on the human digestive and excretory systems for Grade 7 science students.
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Grade 7 Science: Intake and Output
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Read each question carefully and answer to the best of your ability. This worksheet will test your understanding of how living organisms take in nutrients and get rid of waste.
1. Which of the following is NOT an example of 'intake' for a human?
Eating food
Drinking water
Breathing in oxygen
Exhaling carbon dioxide
2. Which organ is primarily responsible for filtering waste from the blood to produce urine?
Stomach
Lungs
Kidneys
Liver
3. The process by which organisms take in substances from their environment is called .
4. The removal of waste products from the body is known as .
5. Digested food nutrients are absorbed into the bloodstream mainly in the .
6. Photosynthesis is a process of intake for plants.
True
False
7. The large intestine is where most nutrient absorption occurs.
True
False
8. Describe the main function of the digestive system in terms of intake and output.
9. Explain how the respiratory system is involved in both intake and output.
10. Label the following parts of the human digestive system:
A.
B.
C.
D.
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