Which of the following is not true concerning tropical plantations?
a. they are generally found in humid, tropical climates.
b. wheat and corn are common products of tropical plantations.
c. most crops from tropical plantations are exported.
d. cocoa, coffee and tea are common products of tropical plantations.

The false statement is - b. Wheat and corn are common products of tropical plantations.

Wheat and corn are not crops that are suitable for growing in the tropical regions because there's too much humidity and too much precipitation for them, and that will cause diseases and destroy the crops. Both of this crops are best suited for farming on places that are low grasslands where the climate is of the temperate type, or on tropical plateaus where there's less precipitation and clearly defined wet and dry season.