ecology & bio environment geography section 2 MCQ Questions & Answers Detailed Explanation

Answer: (d)

Mercury causes biomagnification problem in the ecosystem.

Answer: (c)

Biome is a large naturally occurring community of flora and fauna adapted to the particular conditions in which they occur. For example, Tundra region.

Answer: (c)

Polar climates feature long and dark winter periods with extremely cold temperatures. Rainfall is low, and the deeper soil layers stay frozen all year round.

These harsh conditions combined result in treeless, sparse vegetation, which includes shrubs, lichens and mosses, during the summer months. This typical vegetation linked to polar climates is called tundra.

Answer: (d)

Soil, water and climate of a region are the three primary factors significantly influencing the vegetation of a region. Such factors as depth, texture, and humus content of the soil determine the type of vegetation that can be supported in a region.

Again, any vegetation needs moisture to survive and this explains the range which varies from evergreen forests to shrubs.

Temperature also plays a crucial role in plant growth and development with extremes on either end affecting plant growth severely.

Answer: (d)

The development of plants into diverse and distinctive forms is mainly due to climatic factors such as temperature, precipitation, etc, which are in turn responsible for the variations in soil types. As seen in Koeppen’s classification, we can identify different climates by the types of plants that grow there.

Answer: (c)

A windbreak or shelterbelt is a plantation usually made up of one or more rows of trees or shrubs planted in such a manner as to provide shelter from the wind and protect soil from erosion.

They are commonly planted around the edges of fields on farms. If designed properly, windbreaks around a home can reduce the cost of heating and cooling and save energy. Windbreaks are also planted to help keep snow from drifting onto roadways and even yards.

Other benefits include providing habitat for wildlife and in some regions, the trees are harvested for wood products.