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 solve the question of which set of organisms is wrongly categorized as osmoconformers and osmoregulators, we need to first understand the definitions of these terms and then analyze the given options.

### Step-by-Step Solution:

1. **Understand Osmoconformers and Osmoregulators**:
- **Osmoconformers**: These organisms have a narrow range of salinity tolerance. They typically match their internal osmotic pressure to that of their environment. They are usually found in stable environments like the ocean.
- **Osmoregulators**: These organisms can regulate their internal osmotic pressure and can tolerate a wide range of salinity. They can survive in varying environments, including freshwater and saltwater.

2. **Analyze the Organisms**:
- **Peliamon**: This organism is categorized as an osmoconformer. It is indeed found in freshwater and has a narrow salinity range. This categorization is correct.
- **Humans**: Humans are categorized as osmoregulators. They can tolerate a wide range of salinity, which is also correct.
- **Frog**: Frogs are categorized as osmoconformers, but they are actually osmoregulators, as they can tolerate a wide range of salinity. This categorization is incorrect.
- **Hagfish**: This organism is categorized as an osmoregulator, but it is actually an osmoconformer, as it has a narrow salinity range and can only live in salty water. This categorization is incorrect.
- **Shark**: Sharks are categorized as osmoconformers, which is correct as they live in marine environments with a narrow salinity range.
- **Lizard**: Lizards are categorized as osmoregulators, which is correct since they can tolerate a wide range of salinity.
- **Torpedo**: This organism is categorized as an osmoconformer, which is correct as it is limited to seawater.
- **Cow**: Cows are categorized as osmoregulators, which is also correct as they can tolerate a wide range of salinity.

3. **Identify the Wrong Categorization**:
- The organisms that are wrongly categorized are the **Frog** (incorrectly labeled as osmoconformer) and **Hagfish** (incorrectly labeled as osmoregulator). However, since the question asks for a single set, we can conclude that the **Frog** is the most commonly recognized example of a wrong categorization.

### Conclusion:
The organism that is wrongly categorized is the **Frog**, which should be classified as an osmoregulator rather than an osmoconformer.