Based on the search results, the descriptions of the plants are as follows: I. Cassava is correctly described as a woody shrub. II. Ginger is correctly described as an herb with a pseudostem. III. Malabar spinach is correctly described as an herbaceous climber. IV. Mint is incorrectly described as an annual shrub; it is actually a perennial herb. V. Papaya is incorrectly described as a woody shrub; it is a large herbaceous plant or tree-like herb. Therefore, only three pairs (I, II, and III) are correctly matched.