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.
Complete the following statement:
Heart of cockroach consists of elongated muscular tube lying along _________ of thorax and abdomen.
(1) Ventral line
(2) Mid dorsal line
(3) Lateral line
(4) Mid ventral line
Blood vascular system of cockroach is
(1) Open type
(2) Haemocoel is present
(3) Haemolymph bathes the visceral organs
(4) All are correct
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