Question

Green glands are excretory organs of
A. Crustaceans
B. Centipedes
C. Annelids
D. Mollusks

Answer 1

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.

Complete answer:The Arthropods make a diverse group of organisms including insects, marine animals, etc. They are characterized by segmented soft bodies that are covered in hard exoskeletons. They have paired appendages that are usually joined to the abdominal portion of the organism’s body.
The crustacean is a subgroup of Arthropods that consists of marine animals like, crabs, prawns, shrimps, etc. head, thorax, and abdomen are three major divisions of a crustacean body. Like all other Arthropods, the Crustaceans also have a hard exoskeleton covering. Crustaceans form a number of larvae types. The most common type of larval type is Nauplius. The crustaceans have a paired set of excretory glands that are composed of three parts. These glands have characteristic green color due to which they are called green glands. As they are present in the larger antennae of the organism they are also called antennal glands. Each of the green glands is made up of a sac, a labyrinth, and a bladder. The labyrinth is the major excretory part of the green gland.

Hence, from the above discussion, we can conclude that the right answer is option A.Crustaceans

Note: The Crustaceans reproduce sexually and produce larvae. Some of the Crustaceans are able to change their sex during the course of life. Parthenogenesis is also another unique feature of crustaceans. Viable eggs from a female can produce larvae without fertilization.