A) Humans Kidneys, sebaceous glands and tear glands
B) Earthworm Pharyngeal, integumentary and septal nephridia
C) Cockroach Malpighian tubules and enteric caeca
D) Frog Kidneys, skin and buccal epithelium
Correct Answer: B
Solution :
[b] In earthworm, excretory system is made up of many segmentally arranged microscopic coiled tubes called nephridia. These are ectodermal in origin and analogous to vertebrate kidney. In origin and analogous to vertebrate kidney. In Pheretima, following three types of nephridia are seen. |
(i) Pharyngeal nephridiaSituated in either side of pharynx and oesophagus in 4th, 5* and 6th segment. |
(ii) Integumentary nephridiaScattered in the body wall, seen from 7th segment onwards. |
(iii) Septal nephridia Largest nephridia attached to both faces of each intersegment septum behind 15th segment. |
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