The colepteran insect that can be killed by proteins produced by Bacillus thuringiensis is

Options

A. beetles.
B. armyworm
C. flies
D. tobacco budworm.

Answer

To solve the question regarding which colepteran insect can be killed by proteins produced by Bacillus thuringiensis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Bacillus thuringiensis**:
- Bacillus thuringiensis (Bt) is a bacterium that produces proteins toxic to certain insects. These proteins are known to target specific groups of insects.

2. **Identifying Insect Groups**:
- The question mentions four types of insects: beetles, armyworms, flies, and tobacco budworms. We need to classify these insects into their respective orders.
- Beetles belong to the order Coleoptera.
- Armyworms and tobacco budworms belong to the order Lepidoptera.
- Flies belong to the order Diptera.

3. **Determining the Target Insects**:
- The proteins produced by Bacillus thuringiensis are known to be effective against certain insects.
- Specifically, they are effective against Lepidopteran insects (like armyworms and tobacco budworms) and some Coleopteran insects (like beetles).

4. **Focusing on Coleopteran Insects**:
- Since the question specifically asks for a Coleopteran insect, we will focus on beetles.
- The proteins from Bacillus thuringiensis can indeed affect some beetles, making them susceptible to these proteins.

5. **Conclusion**:
- Therefore, the colepteran insect that can be killed by proteins produced by Bacillus thuringiensis is **beetles**.

### Final Answer:
The colepteran insect that can be killed by proteins produced by Bacillus thuringiensis is **beetles**.

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