Question

Excretory organ of Balanoglossus is ________.

• A. Malpighian tubules
• B. Flame cells
• C. Nephridia
• D. Proboscis gland

Answer 1

Answer: (D)

Proboscis gland

Balanoglossus is a hemichordate. The excretory organ in Balanoglossus is glomerulus. This is also known as the proboscis gland. This gland is present in front of the central sinus. The gland projects outward in the proboscis coelom. The gland is comprised of many tube like projections. The tubes are blind at one end. The tubes are formed by the peritoneum. They are present as the covering of buccal diverticulum, central sinus, and heart vesicle. This organism is considered as the link between vertebrates and invertebrates.

Thus, the correct answer is option D.