Blood Vascular System of Cockroach

Q. describe differance between reproductive system of male and female cockroach

Q. The figure shows open circulatory system of cockroach. Identify A, B and C.

1. A-Posterior aorta, B-Alary muscles, C-Chambers of heart
2. A-Anterior aorta, B-Ciliary muscles, C-Chambers of heart
3. A-Anterior aorta, B-Alary muscles, C-Chambers of heart
4. A-Posterior aorta, B-Circular muscles, C-Chambers of heart

Q. The heart of cockroach lies along mid dorsal line of

1. head and thorax
2. thorax and abdomen
3. head and abdomen
4. head, thorax and abdomen

Q.

Blood from pericardial sinus enters the heart of cockroach through:

1. Anterior aorta

2. Osculum

3. Fenestrae

4. Ostia

Q. What is the site of gaseous exchange in an insect?