Syllabus content and objectives
Official JAMB Biology outline · B: Form and Functions
Content
Excretory structures: contractile vacuole, flame cell, nephridium, Malpighian tubule, kidney, stoma and lenticel; excretory mechanisms involving kidneys, lungs and skin; excretory products of plants, including carbon(IV) oxide, oxygen, tannins, resins, gums, mucilage and alkaloids.
Objective
Define excretion and state its significance; relate the characteristics of excretory structures to their functions; relate kidney structure to excretory and osmoregulatory functions; identify the functions and excretory products of lungs and skin; deduce the economic importance of plant excretory products.
Practice Past Questions on this Topic
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