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30/08/2020 6:52 pm
Topic starter
Which one feature is common to leech, cockroach and scorpion?
(a) Nephridia
(b) Ventral nerve cord
(c) Cephalization
(d) Antennae
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30/08/2020 6:57 pm
(a) Nephridia
Explanation:
Nephridia are invertebrate organs which function similarly to kidneys. They remove metabolic wastes from an animal’s body. They are of two basic types, metanephridia and protonephridia. A metanephridium is a type of excretory gland or nephridium found in annelids, arthropods and molluscs. A protonephridium is a network of dead-end tubules lacking internal openings. The ends are called flame cells or solenocytes; they functions in osmoregulation.