(a) Grapes: Propagated through cuttings, where healthy vine segments are planted to develop new plants.
(b) Apple: Propagated through grafting, combining a rootstock and scion for improved yield and disease resistance.
(c) Brinjal: Propagated through seeds, which are sown directly or in nurseries for transplanting.
(d) Sugarcane: Propagated through stem cuttings, where mature cane segments with nodes are planted to grow new plants.
In the adjoining figure, \( AP = 1 \, \text{cm}, \ BP = 2 \, \text{cm}, \ AQ = 1.5 \, \text{cm}, \ AC = 4.5 \, \text{cm} \) Prove that \( \triangle APQ \sim \triangle ABC \).
Hence, find the length of \( PQ \), if \( BC = 3.6 \, \text{cm} \).