The correct answer is: Sub-alpine Forests.
Sub-alpine forests are a type of forest that occurs in the higher elevations of mountains. They are characterized by a dense canopy of trees, which provides a home for a variety of plants and animals. The trees in sub-alpine forests are typically evergreen, and they have adapted to the cold and dry conditions of the high mountains.
Bamboo forests are a type of forest that is dominated by bamboo plants. Bamboo is a type of grass that grows very quickly, and it can form dense thickets. Bamboo forests are often found in tropical and subtropical regions, and they are an important habitat for many animals.
Mangrove forests are a type of forest that grows in coastal areas. Mangrove trees are adapted to the salty water and muddy soil of the coast, and they form dense forests that provide a home for a variety of plants and animals.
Scrub forests are a type of forest that is dominated by small trees and shrubs. Scrub forests are often found in dry and rocky areas, and they are an important habitat for many animals.
In the higher elevations of Manipur, one might find sub-alpine forests. Sub-alpine forests are a type of forest that occurs in the higher elevations of mountains. They are characterized by a dense canopy of trees, which provides a home for a variety of plants and animals. The trees in sub-alpine forests are typically evergreen, and they have adapted to the cold and dry conditions of the high mountains.