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

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: (b)

Energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem.

Eventually, all of the energy that enters the ecosystem is lost in the form of heat.

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: (a)

El Nino Modiki is associated with global warming.

Answer: (d)

An ecosystem is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. These components are regarded as linked together through nutrient cycles and energy flows.

Answer: (d)

A natural region is a basic geographic unit. Usually, it is a region that is distinguished by its common natural features of geography, geology and climate.

The surface of the Earth is divided into twelve natural regions. These regions have been categorized on the basis of surface features, climate and vegetation.