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

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.

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: (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: (a)

An evergreen forest is a forest consisting entirely or mainly of evergreen trees that retain green foliage all year round.

Such forests reign in the equatorial region, between the tropics primarily as broadleaf evergreens, and in temperate and boreal latitudes primarily as coniferous evergreens.

Answer: (c)

A National Park is an area that is strictly reserved for the welfare of wildlife and where activities such as forestry, grazing or cultivation are not allowed. Private ownership, rights and habitat, manipulation are not permitted in a national park.

There are 103 national parks in India covering an area of 40,500 km², which is 1.23% of the geographical area of the country.

Answer: (a)

El Nino Modiki is associated with global warming.