Question

Cinchona trees are found in the areas of rainfall more than …………………………….
A- 100 cm
B- 20 cm
C- 170 cm
D- Less than 50 cm

Answer 1

Hint:
> It is a species of flowering plants containing at least 23 varieties of trees and shrubs in the Rubiaceae family.
> Both are native to western South America’s tropical Andean forests.
> These trees grow up to 15 meters (50 feet) in height.

Complete answer:
Option A) 100 cm – is a correct answer because Cinchona trees are large shrubs or small trees; they have evergreen foliage and grow 5-15m in height. The flowers, in terminal panicles, are white, pink or red and the fruit is a small capsule comprising multiple grains. These are found in the areas where the rainfall is more than 100 cm. These trees are found in South America. There are 23 species of Cinchona. It is a correct option.

Option B) 20 cm – is an incorrect answer because Cinchona trees are found in the areas of rainfall more than 100 cm. It grows up to 15 meters in height. It is incorrect here.
Option C) 170 cm – is an incorrect answer because these are found in the areas of rainfall more than100 cm not more than 170cm. It is an incorrect option.

Option D) Less than 50 cm – is an incorrect answer because these trees are when fully grown often reaches 50 cm to 100 cm but they are found in the areas of rainfall more than 100 cm. Thus, it is an incorrect option.

Option E) None of these – is an incorrect answer because the correct answer is 100 cm. Cinchona trees are found in the areas of rainfall more than 100 cm.

Therefore the correct answer is B

Note:
> Cinchona is a flowering plant species containing at least 23 trees and shrubs species.
> In Central America, Jamaica, French Polynesia, Sulawesi, Saint Helena in the south Atlantic, a few species are reportedly naturalized.
> In India and Java, where they have developed hybrids, others have been cultivated.