Question -
Answer -
Functions:
(1) Ureters in frog:
They carry the urine from the kidneys to the cloaca. In males, it also conducts the sperm as it is urinogenr+al duct. In females the ureters and oviduct open- separately in the cloaca.
(2) Malphigian tubules:
They are the excretory organs of a cockroach.
They collect the nitrogenous wastes from the haeomolymph and send them into the intestine.
Each tubule is lined by glandular and ciliated cells. They absorb nitrogenous waste products and convert them into uric acid which is excreted out through the hindgut.
(3) Body wall of earthworm:
The body wall of the earthworm is covered externally by a thin non-cellular cuticle