Question

chitin absent in which type of mouth parts cockroach​

Answer 1

Answer:

labium is the answer.......

Answer 2

Chitin absent in labrum mouth part of cockroach

Explanation:

• The mouthparts of cockroach are created to suit its habit for benefiting from strong food and thus it has all-around created mandibles. All the parts of the mouthparts are available with no alteration. These mouthparts help the cockroach to nibble and bite on the hard stuff, devour delicate stuff and furthermore lap upon fluids. The mouthparts likewise incorporate Labrum, Mandibles, and a couple of first maxillae, labium, and hypopharynx. Coming up next is the structure of every one of the mouthpart.  
• Labrum: The mouth is secured by labrum. It is otherwise called the upper lip. This labrum is joined to the clypeus. The labrum bears gustatory sensilla on its inward surface. The labrum helps in tasting and furthermore dealing with the food.