Which type of mouthparts is present on the lateral side of the pre-oral cavity in cockroach?
Labrum and mandibles
Mandibles and labium
Mandibles and $1^{\text {st }}$ maxillae
Mandibles and hypopharynx
Identify $X$ and $Y$
Explain the digestive system of cockroach with the help of a labelled sketch.
Explain the structure of brain and neuron of cockroach
Match List $I$ with List $II$ related to digestive system of cockroach.
List $I$ | List $II$ |
$A$ The structures used for storing of food | $I$ Gizzard |
$B$ Ring of $6-8$ blind tubules at junction of foregut and midgut. | $II$ Gastric Caeca |
$C$ Ring of $100-150$ yellow coloured thin filaments at junction of midgut and hindgut. | $III$ Malpighian tubules |
$D$ The structures used for grinding the food. | $IV$ Crop |
Choose the correct answer from the options given below:
The figure given below shows the alimentary canal of cockroach with few structures labelled as $1,2,3$ and $4 .$ Identify the correct identification of the structure which is also called proventriculus and helps in grinding the food particles.