Demonstration of Learning - Grade 7 Science

How does the relationship between tissues and organs contribute to the overall functionality and survival of an organism?

• The relationship between tissues and organs is irrelevant to survival; individual cells perform all necessary functions on their own.

• Only the tissues in the organs contribute to survival, and organs play no active role in an organism's health.

• Tissues cannot work with other tissues to form organs, and organs do not perform interdependent functions in any organism.

• Organs composed of specialized tissues carry out complex, interdependent tasks that are necessary for the organism's survival, such as digestion, respiration, and circulation.

Which of the following best explains how different tissues work together to form a functional eye?

• A. Muscle tissue focuses the lens, while nervous tissue detects light.

• B. Epithelial tissue protects the eye surface, while connective tissue shapes the eyeball.

• C. Connective tissue forms the lens, while muscle tissue controls pupil size.

• D. Epithelial tissue forms the retina, muscle tissue adjusts the lens, and nervous tissue transmits visual signals.

Which of the following best explains how two different tissues work together to help the root do its job?

• A. Xylem tissue moves water up the plant, while phloem tissue moves food down to the root.

• B. Epidermal tissue forms tiny root hairs to absorb water, while vascular tissues carry water and nutrients through the root.

• C. Storage tissue holds food for the plant, while protective tissue keeps germs out of the root.

• D. Growing tissue makes new root cells, while support tissue helps the root stay strong.

If the epithelial tissue in the stomach failed to function properly, what could be the impact on the overall organ system?

• The absence of epithelial tissue would prevent the stomach from producing digestive enzymes, causing the organ to lose its ability to break down food.

• The stomach would still be able to perform its function of digestion without issue, as other tissues would compensate.

• The failure of epithelial tissue would only affect the absorption of nutrients and not the mechanical digestion process.

• The stomach would not be impacted, as epithelial tissue does not play a crucial role in the organ's function.

The interaction of different tissue types forms the heart in animals.