Choose the incorrect statement(s) for conformers.
A. Aquatic animals can change osmotic concentration of body fluids with that of the ambient water osmotic concentration.
B. Body temperature doesnot change with small fluctuation in environmental temperature.
C. Cannot maintain a constant internal environment

Options

A. Only B
B. Only A
C. Only A and B
D. A, B and C

Answer

To solve the question regarding the incorrect statements for conformers, let's analyze each statement step by step.

### Step 1: Understand the concept of conformers
Conformers are organisms that cannot regulate their internal environment and their physiological processes change according to the external environment. They are often referred to as "cold-blooded" animals, such as fish, reptiles, and amphibians. Their body temperature and osmotic concentration fluctuate with environmental conditions.

**Hint:** Remember that conformers are influenced by their surroundings, unlike regulators which maintain a stable internal environment.

### Step 2: Analyze Statement A
**Statement A:** "Aquatic animals can change osmotic concentration of body fluids with that of the ambient water osmotic concentration."

- This statement is correct. Conformers, especially aquatic animals, can adjust their body fluids' osmotic concentration to match the surrounding water. This is a characteristic feature of conformers.

**Hint:** Consider how aquatic animals interact with their environment in terms of osmotic balance.

### Step 3: Analyze Statement B
**Statement B:** "Body temperature does not change with small fluctuations in environmental temperature."

- This statement is incorrect. Conformers do not maintain a constant body temperature; instead, their body temperature changes with the environmental temperature. Therefore, this statement misrepresents the nature of conformers.

**Hint:** Think about how temperature regulation works in different organisms, especially in cold-blooded animals.

### Step 4: Analyze Statement C
**Statement C:** "Cannot maintain a constant internal environment."

- This statement is correct. Conformers cannot maintain a constant internal environment; their internal conditions vary with external changes. This is a fundamental characteristic of conformers.

**Hint:** Reflect on the definition of conformers and how they relate to homeostasis.

### Conclusion
After analyzing all three statements:
- Statement A is correct.
- Statement B is incorrect.
- Statement C is correct.

Thus, the incorrect statement for conformers is **B**.

### Final Answer
The incorrect statement(s) for conformers is **B**.