Many freshwater organisms cannot live for long in seawater because the surrounding water will be_______to body cells and _______may occur.

Options

A. hypertonic, exosmosis
B. hypertonic, endosmosis
C. hypotonic, exosmosis
D. hypotonic, ednosmosis

Explanation

**Step-by-Step Solution:**

1. **Understanding the Environment**: Freshwater organisms live in an environment where the water is less salty compared to their body fluids. When they are placed in seawater, which is salty, it creates a different osmotic condition.

2. **Defining Hypertonic**: In this context, seawater is considered hypertonic relative to the body cells of freshwater organisms. This means that the concentration of solutes (like salt) in the seawater is higher than that inside the cells of the freshwater organisms.

3. **Osmosis Process**: Due to the hypertonic nature of seawater, water will move out of the freshwater organism's cells to the surrounding seawater. This movement of water is known as exosmosis.

4. **Consequences of Exosmosis**: As water leaves the cells, the cells will lose water and may become dehydrated. This can lead to physiological stress and ultimately can be fatal for the freshwater organisms if they cannot return to their natural habitat.

5. **Conclusion**: Therefore, the correct completion of the statement is that the surrounding water will be hypertonic to body cells and exosmosis may occur.

**Final Answer**: The surrounding water will be **hypertonic** to body cells and **exosmosis** may occur.

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