The Effect of Water Pressure on Living Organisms

1. What is the primary reason water pressure increases with depth?

• a. Increased temperature

• b. Increased salinity

• c. Increased weight of water above

• d. Decreased oxygen levels

2. What adaptation helps deep-sea organisms withstand high water pressure?

• a. Thick fur

• b. Gas-filled swim bladders

• c. Compact body structures and specialized proteins

• d. Color-changing abilities

3. What is the unit of measurement for pressure in liquids?

• a. Joule

• b. Newton

• c. Pascal

• d. Watt

4. Which type of skeleton do cartilaginous fish have?

• a. Bony skeleton

• b. No skeleton

• c. Cartilaginous skeleton

• d. Metallic skeleton

5/Wat is the role of lipoproteins in the cellular membranes of deep-water organisms?

• a. Increase cellular rigidity

• b. Prevent membrane collapse

• c. Enhance cellular color

• d. Increase oxygen absorption

6. Which fish are characterized by having a skeleton made of bones?

• a. Sharks

• b. Rays

• c. Tilapia

• d. Starfish

7. What happens to pressure at points that lie in the same horizontal plane in a homogeneous static liquid?

• a. Pressure is higher at the edges

• b. Pressure is lower at the center

• c. Pressure is the same at all points

• d. Pressure varies with temperature

8. How do some deep-sea organisms maintain buoyancy without swim bladders?

• a. By having hollow bones

• b. By storing gases in their liver

• c. By using a large, oil-rich liver

• d. By reducing their body density

9. Why do surface water organisms have less strong physical structures compared to deep-sea organisms?

• a. They are exposed to lower water pressure

• b. They have access to more sunlight

• c. They have better oxygen supply

• d. They have less competition for food

10. What is the atmospheric pressure at sea level?

• a. 0.5 \atm 10^5 \, \p{N/m}^2

• b. 1.013 \atm 10^5 \, \p{N/m}^2

• c. 2 \atm 10^5 \, \p{N/m}^2

• d. 3.5 atm 10^5 , \p{N/m}^2