From cells to organ systems

Grade 9 Science Worksheet - Building Confidence

Circle the best answer.

1. 1.

   Ari reads a ladder of body parts, smallest at the bottom. Which level is box W, the heart?

   • Cell
   • Organ
   • Organ system
   • Tissue
2. 2.

   Ladder (model, not to scale). No level names are printed. Bo reads a ladder of body parts from the digestive tract. Which level is box W, the digestive system?

   • Organ
   • Organ system
   • Organism
   • Tissue
3. 3.

   Cell, tissue, organ, organ system, organism. Meaning to match: a body part built from two or more tissue types. Jun matches a meaning to a term from the word bank. Which term means a body part built from two or more tissue types?

   • Tissue
   • Organism
   • Organ system
   • Organ
4. 4.

   Cell, tissue, organ, organ system, organism. Meaning to match: a group of similar cells that work together on one job. Kira matches a meaning to a term from the word bank. Which term means a group of similar cells that work together on one job?

   • Tissue
   • Organ system
   • Organ
   • Organism
5. 5.

   Cell, tissue, organ, organ system, organism. Meaning to match: a group of organs working together on a major body job. Luz matches a meaning to a term from the word bank. Which term means a group of organs working together on a major body job?

   • Cell
   • Organ system
   • Organism
   • Organ

6. Read this first

   Card (model)

   Tissue Y. Main cell: the neuron, with branches called dendrites and one branch called an axon. Job: receive and send electrical signals.

7. 6.

   Noah reads a tissue card. Which type of tissue is Y?

   • Nervous tissue
   • Connective tissue
   • Muscle tissue
   • Epithelial tissue

8. Card (model)

   Tissue Z. Cells: flat cells packed in layers. Found: the outer part of the skin and the lining of the mouth. Job: cover and protect against rubbing.

9. 7.

   Pia reads a tissue card. Which type of tissue is Z?

   • Epithelial tissue
   • Connective tissue
   • Nervous tissue
   • Muscle tissue
10. 8.

    Map (model, not to scale): two boxes. Ren reads a map of two body systems. The arrow from the respiratory system to the circulatory system is marked ?. What does it carry?

    • Carbon dioxide, which leaves the bloodstream
    • Nothing, because the two systems work alone
    • Nutrients, which enter the bloodstream
    • Oxygen, which enters the bloodstream

11. Use this

    Map (model, not to scale):

12. 9.

    Tala reads a map of two body systems. The arrow from the digestive system to the circulatory system is marked ?. What does it carry?

    • Oxygen, which enters the bloodstream
    • Nutrients, which enter the bloodstream
    • Carbon dioxide, which enters the bloodstream
    • Nothing, because the two systems work alone
13. 10.

    Zee reads a map of two body systems. The arrow from the circulatory system to the respiratory system is marked ?. What does it carry?

    • Nutrients, which are carried to the lungs
    • Nothing, because the two systems work alone
    • Carbon dioxide, which is carried to the lungs
    • Oxygen, which is carried to the lungs