Consider the following pairs: Plant — Description. I. Cassava : Woody shrub. II. Ginger : Herb with pseudostem. III. Malabar spinach : Herbaceous climber. IV. Mint : Annual shrub. V. Papaya : Woody shrub. How many of the above pairs are correctly matched?

I. Cassava : Woody shrub — Correct. Cassava (Manihot esculenta) is a perennial woody shrub grown for its tuberous roots.

II. Ginger : Herb with pseudostem — Correct. Ginger is a herbaceous plant; its aerial shoot is a pseudostem formed by leaf bases.

III. Malabar spinach : Herbaceous climber — Correct. Malabar spinach (Basella alba) is a soft-stemmed climbing vine/herbaceous climber.

IV. Mint : Annual shrub — Incorrect. Mint is generally an aromatic herb, often perennial, not a shrub.

V. Papaya : Woody shrub — Incorrect. Papaya is a giant herbaceous plant/tree-like herb with a soft, non-woody stem, not a woody shrub.

So, three pairs are correctly matched.