which of the following set of organisms is wrongly categorised as osmoconformers and osmoregulators

Options

A. palaemon(osmoconformers) and human ( osmoregulator)
B. frog (osmoconformer) and hagfish ( osmoregulator)
C. shark (osmoconformer) and lizard ( osmoregulator)
D. Torpedo(osmoconformers) and cow (osmoregulator)

Answer

To determine which set of organisms is wrongly categorized as osmoconformers and osmoregulators, we need to understand the definitions and examples of each category.

### Step-by-Step Solution:

1. **Understand Osmoconformers**:
- Osmoconformers are organisms that can match their body osmolarity to their environment. They do not actively regulate their internal osmolarity; instead, it changes with the external environment.
- **Examples**: Sharks, skates, and hagfish.

2. **Understand Osmoregulators**:
- Osmoregulators are organisms that can tightly regulate their body osmolarity, maintaining it constant regardless of the external environment.
- **Examples**: Humans, frogs, and cows.

3. **Analyze the Options**:
- **Option 1**: Paleomon are osmoregulators and humans are osmoregulators. (Correct)
- **Option 2**: Frog is osmoregulator and hagfish is osmoregulator. (Incorrect, because hagfish is an osmoconformer)
- **Option 3**: Shark is osmoconformer and lizard is osmoregulator. (Correct)
- **Option 4**: Torpedo is osmoconformer and cow is osmoregulator. (Correct)

4. **Identify the Incorrect Categorization**:
- The only option that incorrectly categorizes organisms is **Option 2**, where both frog and hagfish are stated as osmoregulators. This is incorrect because the hagfish is an osmoconformer.

### Conclusion:
The set of organisms that is wrongly categorized as osmoconformers and osmoregulators is **Option 2**: Frog is osmoregulator and hagfish is osmoregulator.

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