(a) Name the parts labelled A, B, C and D
(b) What is the significance of the relative size of B and C?
(c) Name the structures in: (i) Amoeba (ii) earthworm. Which are equivalent in function to the structure illustrated in the diagram
Explanation
2. (a) A = Bowman's capsule B=Afferent capillary C= Efferent capillary This D = Glomerulus
(b) Blood pressure from renal artery is high. pressure is further increased by convuluted nature of the glomerulus.: coupled with difference in diameter between the afferent and efferent capillaries (i.e the afferent being bigger in size) This creates room for thorough filtration or near so, of waste products in the glomerulus (c) (0) Contractile vacuole (i) Nephridium