Question

Open circulatory system is not of physiological hindrance in Cockroach because [AIIMS 1999]
A) Heart is simple but chambered
B) Blood is colourless
C) Circulatory and respiratory systems are not connected
D) Excretion occurs through malpighian tubules

Answer 1

Open circulatory system is not of physiological hindrance in Cockroach because
➡️ Excretion occurs through malpighian tubules

Answer 2

Answer:

The correct answer is D) Excretion occurs through Malpighian tubules.

Explanation:

The system or excretion that is usually found in insects, mostly the myriapods, the arachnids and the tardigrades is the Malpighian tubule system. The Malpighian tubule system is an osmoregulatory excretory system that consists of branched tubules that extend from the alimentary canal, absorbing solutes, water, wastes from the haemolymph which occurs in the surrounding owing to the open circulatory system. For this absorption, the open circulatory is needed, as the closed circulatory system would not have aided in this process.