Head and Mouth Parts in Cockroach

Q. Which of the following are sensory organs in a cockroach?

1. Antennae
2. Gizzard
3. Ommatidia
4. Anal cerci

Q.

Mouth parts of cockroach are of this type:

1. Piercing and sucking

2. Sponging and sucking

3. Biting and chewing

4. Siphoning and sucking

Q.

Which of the following statements is/are, not correct, regarding the head of a cockroach.

i). It is formed by the fusion of 8 plates.

ii). Head is arranged in an axis perpendicular to the axis of the body.

iii). Mouth parts are of varying sizes.

iv). Head is Hexagonal in shape.

1. (i) and (ii)

2. (iii) and (iv)

3. (i) and (iv)

4. (ii) and (iii)

Q.

Mouth parts of cockroach are of this type:

1. Piercing and sucking

2. Sponging and sucking

3. Biting and chewing

4. Siphoning and sucking

Q.

Hardened exoskeletal plates of cockroach are called:

1. podomeres

2. sclerites

3. tegmina

4. tagmata

Q. The head of the cockroach is called

1. epignathous
2. hypognathous
3. agnathous
4. none of the above

Q.

why is the tongue in cockroach called hypopharynx?