Question:
These structures of cockroach prevents the food from falling and pushes it into preoral cavity
These structures of cockroach prevents the food from falling and pushes it into preoral cavity
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Mouthparts functions:
{Mandibles}: Grinding/Cutting.
{Maxillae}: Holding.
{Labium}: Floor (Prevents falling).
{Labrum}: Roof.
Updated On: Mar 31, 2026
- Labial palps
- Maxillary palps
- Galea
- Lacinia
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The Correct Option is A
Solution and Explanation
Step 1: Understand Cockroach Mouthparts:
Step 2: Identify the Answer:
The question asks for the structure that prevents food from falling (acting as a floor). This function is attributed to the Labium. Among the options, "Labial palps" is the component associated with the Labium. In multiple-choice questions where "Labium" is not a standalone option, "Labial palps" is accepted as the representative structure for the lower lip's location and function.
- Labium (Lower Lip): Forms the floor of the pre-oral cavity. It bears a pair of Labial palps. Its primary function is to close the pre-oral cavity ventrally, preventing food particles from falling out during chewing, and to push masticated food into the mouth.
- Maxillae: Possess parts like Galea, Lacinia, and Maxillary palps. They are used for holding and cutting food.
- Labrum (Upper Lip): Holds food from above.
Step 2: Identify the Answer:
The question asks for the structure that prevents food from falling (acting as a floor). This function is attributed to the Labium. Among the options, "Labial palps" is the component associated with the Labium. In multiple-choice questions where "Labium" is not a standalone option, "Labial palps" is accepted as the representative structure for the lower lip's location and function.
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