Question

One of the following animals does not use tracheae as the respiratory organs. This animal is ______.

Options

• grasshopper

• prawn

• mosquito

• cockroach

Answer 1

One of the following animals does not use tracheae as the respiratory organs. This animal is prawn.

Explanation:

Prawns are aquatic arthropods and do not use tracheae. Instead, they use specialised respiratory organs called gills to absorb dissolved oxygen directly from the water. Grasshoppers, mosquitoes, and cockroaches are all terrestrial insects. Insects breathe through a complex network of air tubes called a tracheal system. Air enters their bodies through tiny lateral openings called spiracles and travels through these tracheae to deliver oxygen directly to the tissues.