Question

Which of the following stored grain pests is incapable of feeding on whole grain?

• A. Rice weevil
• B. Red flour beetle
• C. Khapra beetle
• D. Lesser grain borer

Hint:

Stored grain pests:
- Internal feeders: Rice weevil, Lesser grain borer (feed on whole grains).
- External feeders: Red flour beetle, Khapra beetle (feed on broken/flour).

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
This question tests knowledge of stored grain pests and their feeding habits.

Step 2: Detailed Explanation:
Red flour beetle (Tribolium castaneum) feeds on broken grains, flour, and milled products.
It is incapable of feeding on whole, undamaged grains.
Rice weevil (A): Feeds on whole grains (internal feeder).
Khapra beetle (C): Feeds on whole grains.
Lesser grain borer (D): Feeds on whole grains (internal feeder).
Thus, the red flour beetle is incapable of feeding on whole grain.

Step 3: Final Answer:
Thus, the red flour beetle is incapable of feeding on whole grain, which corresponds to option (B).
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