Structure and Function in Organ Systems (Grade 8)
Free printable Grade 8 science worksheet on animal and plant organ systems. Covers the respiratory, circulatory, digestive and excretory systems plus xylem, phloem and stomata.
Grade 8 · Science worksheet
Name
Date
Science
Structure and Function in Organ Systems
Answer each question about how the structure of a cell, tissue or organ suits its function.
- 1.Which muscle below the lungs flattens to help you breathe in?
- 2.Which organ system works with the circulatory system to deliver oxygen to every cell?
- 3.What are the tiny openings in a leaf that let carbon dioxide in and water vapour out called?
- 4.Which plant tissue carries water and dissolved minerals up from the roots?
- 5.Which blood vessels carry blood back to the heart?
- 6.Alveoli are thin walled and surrounded by capillaries. How does that structure help their function?
- 7.In which tiny air sacs of the lungs does gas exchange happen?
- 8.Which blood vessels are one cell thick so substances can pass into the surrounding tissue?
- 9.What are the tiny finger-like folds that increase the surface area of the small intestine called?
- 10.Which organ filters wastes out of the blood and makes urine?
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