Which of the following is incorrect?

Options

A. Regulators- show homeostasis
B. Conformers - cannot maintain homeostasis
C. Partial regulators - have an ability to regulate upto limited range
D. Conformers - show homeostasis

Answer

To solve the question "Which of the following is incorrect?", we need to analyze the given options related to the concepts of regulators and conformers in biology.

### Step-by-Step Solution:

1. **Understanding Regulators**:
- Regulators are organisms that can maintain their internal environment (such as temperature) regardless of external conditions. This ability to maintain a stable internal state is known as homeostasis.
- Example: Mammals and birds are considered regulators because they can regulate their body temperature.

**Hint**: Remember that regulators maintain homeostasis by adjusting their internal conditions.

2. **Evaluating the First Option**:
- The first option states that regulators show homeostasis. Since we established that regulators do maintain homeostasis, this statement is **correct**.

**Hint**: Check if the organism can maintain stable internal conditions; if yes, it’s a regulator.

3. **Understanding Conformers**:
- Conformers are organisms that do not have the ability to maintain a constant internal environment. Instead, their internal conditions change according to the external environment.
- Example: Many reptiles and amphibians are conformers as their body temperature varies with the temperature of their surroundings.

**Hint**: Conformers adjust to their environment rather than maintaining a stable internal state.

4. **Evaluating the Second Option**:
- The second option states that conformers cannot maintain homeostasis. This is true, as conformers do not regulate their internal conditions. Therefore, this statement is **correct**.

**Hint**: If an organism's internal conditions change with the environment, it is likely a conformer.

5. **Evaluating the Fourth Option**:
- The fourth option states that conformers can show homeostasis. This is **incorrect** because conformers do not maintain homeostasis; they simply conform to the external environment.

**Hint**: Remember, if it’s a conformer, it cannot maintain homeostasis.

6. **Conclusion**:
- The only incorrect statement among the options provided is that conformers can show homeostasis. Therefore, the answer to the question is the fourth option.

### Final Answer:
The incorrect statement is: **Conformers can show homeostasis.**