What is incorrect regarding Periplaneta americana?

1. Excretion by malpighian tubules

2. Hemolymph delivering oxygen to tissues

3. Paurometabolous development

4. Mosaic vision

Which among the following statements are incorrect about cockroach?

(1) Haemocytes lack respiratory pigment.

(2) Has 13 chambered heart on the ventral side of the body.

(3) Blood from sinuses enter heart through ostia.

(4) Has 10 pairs of spiracles present on lateral side of body.

Choose the incorrect option from the following-

Heart of cockroach

Frogs differ from humans in possessing
1. paired cerebral hemispheres
2. hepatic portal system
3. nucleated red blood cells
4. thyroid as well as parathyroid

Identify the incorrect statement regarding the blood vascular system of cockroach:

The following diagram shows blood vascular system of cockroach with certain labelled parts a, b & c. Which of the following statements is/are incorrect regarding this system?

A. The blood vascular system of cockroach is of open type with well developed blood vessels which open into space (haemocoel).

B. The haemolymph is composed of colourless plasma and haemocytes.

C. The labelled part 'a' represents anterior aorta emerging from first chamber of heart bearing ostia on either side.

(1) C only

(2) B & C

(3) A only

(4) All of the above statements are correct

Mark the correct statement with respect to cockroach

(1) Haemolymph is composed of colourless

     plasma and erythrocytes

(2) All the spiracles are always open in cockroach 

(3) Haemolymph enters heart through ostia and is

      pumped from posterior to anterior direction

(4) Haemolymph has no role in transportation of 

     nutrients and metabolic wastes

Alary muscles play an important role in

1. Circulation of blood

2. Respiration

3. Body movement

4. Peristalsis

Match the following.