NEET BIOLOGY

Detailed explanation-1: -Green glands, also called as antennal or maxillary glands, help carry out excretory functions in crayfish. These glands act much like kidneys in humans and help crayfish remain healthy by eliminating toxic substances and waste products in their urinary and circulatory systems.

Detailed explanation-2: -Hint: Green glands or the antennal glands are paired glands in prawns, shrimps, etc. They help in the elimination of ammonia waste from the body. They are one of the excretory organs seen in Arthropods. They have three distinct parts and are present in larger antennae of the organisms.

Detailed explanation-3: -Antennal or green glands: A pair of enteric glands are found in the coxa (Grap) of each antenna. They are green in color, hence the name “green gland.” The antennal gland consists of four regions: End sac: This is the smallest part which is bean-shaped. It is located between the bladder and the labrum.

Detailed explanation-4: -So, the correct answer is ‘Excretion’.

Detailed explanation-5: -Paired maxillary and antennal glands (also called green glands) are the principal excretory organs in crustaceans.