The heart receives blood from the sinuses through

1. Haemocoel

2. Alary muscles

3. Ostia

4. Aorta

Alary muscles play an important role in

1. Circulation of blood

2. Respiration

3. Body movement

4. Peristalsis

In cockroach, air from atmosphere enters by

1. Trachea

2. Tracheoies

3. Spiracles

4. Chitin

How many pairs of spiracles are found in cockroach?

1. 10

2. 20

3. 5

4. 25

The process through which air in tracheoles and dissolved gases in blood are exchanged is

1. Osmosis

2. Diffusion

3. Active transport

4. Facilitated diffusion

Exoskeleton of each segment in cockroach consists 

1. Dorsal tergum and a ventral sternum

2. Dorsal sternum and a ventral tergum

3. Sternum only

4. Tergum only

Which of the following mouth part act as tongue in cockraoch?

1. Labium

2. Hypopharynx

3. Maxillae

4. Labrum

Hind wings in cockroach arises from

1. Prothorax

2. Mesothorax

3. Metathorax

4. Pronotum

Fore wings in cockroach arises from

1. Hypopharynx

2. Metathorax

3. Mesothorax

4. Prothorax

In cockroach, foregut comprises of

1. Pharynx, oesophagus, crop and gizzard

2. Mesenteron, crop and gizzard

3. lleum, colon and rectum

4. Pharynx, oesophagus and rectum