Respiratory System in Cockroach

Q. In cockroach, on the lateral side of the body, there are pairs of small holes called spiracles.

1. five
2. eight
3. ten

Q. Opening of spiracles in cockroach is guarded by .

1. valves
2. sphincter
3. guard cells

Q. Cockroaches have a separate respiratory system called tracheal system which consists of a series of tubes called trachea which open into small apertures called as ___.

1. ostia
2. dorsal pores
3. spiracles
4. ventral pores

Q. are the small openings through which air is exchanged in cockroaches.

1. Trachea
2. Pharynx
3. Spiracles

Q. Cockroaches have ___ pairs of respiratory openings called spiracles.

1. 5
2. 12
3. 6
4. 10

Q. A circulatory system is said to be closed when blood flows through tubes called blood vessels.

1. True
2. False