Anatomy of Earthworm

1: (b) 15th to last segment, 2: (d) Absorption, 3: (a) Three, 4: (d) Intestine, 5: (a) Outside, 6: (b) Along the ventral surface, 7: (c) Two pairs, 8: (b) One pair, 9: (c) 10th and 11th, 10: (d) 12th and 13th