Gases, especially oxygen and carbon dioxide, are essential for the survival of aquatic animals and plants. The gases from the atmosphere reach the aquatic animals and plants through:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. diffusion.
- Gases such as oxygen and carbon dioxide reach aquatic animals and plants through the process of diffusion.
- In aquatic environments, oxygen from the atmosphere diffuses into the water, and carbon dioxide produced by aquatic organisms diffuses out into the water.
- This movement of gases continues until the concentrations are balanced. Aquatic plants also release oxygen into the water through photosynthesis, which is then available for other aquatic organisms.
- Diffusion is crucial for maintaining the balance of gases necessary for the survival of aquatic life.