Choose the INCORRECT statement.

Options

A. All protozoans are heterotrophs
B. All protists are autotrophs
C. Pellicle is present in euglenoids
D. both (B) &(C)

Answer

To solve the question of identifying the incorrect statement among the given options, we will analyze each statement one by one.

### Step 1: Analyze the First Statement
**Statement:** All protozoans are heterotrophs.
**Analysis:** This statement is correct. Protozoans are primarily heterotrophic organisms, meaning they obtain their food from other organisms rather than synthesizing it themselves.

### Step 2: Analyze the Second Statement
**Statement:** All protists are autotrophs.
**Analysis:** This statement is incorrect. While some protists can be autotrophic (like certain algae), many protists are actually heterotrophic. Therefore, this statement does not hold true for all protists.

### Step 3: Analyze the Third Statement
**Statement:** Pellicle is present in euglenoids.
**Analysis:** This statement is correct. Euglenoids, such as Euglena, have a pellicle, which is a flexible outer layer that helps maintain their shape and allows for movement.

### Step 4: Analyze the Fourth Statement
**Statement:** Both B and C.
**Analysis:** Since statement B is incorrect (as established in Step 2) and statement C is correct, this option cannot be correct as it implies that both statements are incorrect.

### Conclusion
After analyzing all the statements, we find that the **incorrect statement** is:
**B: All protists are autotrophs.**

### Final Answer
The incorrect statement is: **B. All protists are autotrophs.**

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