(a)State one function each of the following parts of the nephron:

(i) glomerulus (ii)Bowman's capsule (iii)proximal convoluted tubule (iv) distal convoluted tubule

(b) Complete the table below.

Organism	Structure for excretion	Form in which waste is excreted by organism
	contractile vacuole
Flatworm
Earthworm
Cockroach
Human		Liquid
	Stomata pore

(c) List five excretory products of plants.