Question

The coastal areas and river deltas have ________ forests
A. Evergreen
B. Mangrove
C. Alpine
D. Deciduous

Answer 1

Hint: These forests are mostly in marshy areas. These areas are also known for having a high salt content in the soil. The trees have special features that help them to deal with the above mentioned clues.

Complete Answer:
The ground in coastal and delta areas are different from the kind of soil structure we find in other places. Since these areas are right beside seas or oceans, the soil has high salinity, along with having a lot of water content. This makes the soil devoid of any significant amount of air. All these features make coastal and deltaic forests very unique.

Let us now see what type of forests these are-
A. Evergreen forests are characterized by trees that do not shed their leaves in winter. They grow in places with very high amounts of rainfall. Therefore, evergreen forests are not the usual kind of forest found in coastal or delta regions. This is not the correct answer.

B. Mangrove forests are characterized by trees that have some unique features. To be able to breathe in the highly clogged and saline soil, they have structures called breathing roots. Delta and coastal areas have Mangrove forests. So, this is the correct answer.

C. Alpine forests are characterized by trees which have pointed, needle shaped leaves. They are also known as conifers. These trees grow in places which are cool and at higher altitudes. Thus, this is not the correct answer.

D. Deciduous forests are characterized by trees that shed their leaves during the autumn-winter seasons. These trees can be found in most places on the earth, but are not part of coastal or delta vegetation. So, this is not the correct answer.

Therefore, the correct answer is Option B.

Note: The Sundarbans reserve forest is the largest mangrove forest in the world. Evergreen trees can grow in cold climates, in more temperate zones, and in tropical zones. Deciduous plants usually have flowers when they do not have leaves. It increases the effectiveness of pollination. Alpine forests commonly have silver fir, junipers, pines and birches.