Answer: Option C. -> National Park
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: Option A. -> Equatorial region
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: Option C. -> wind breaks
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: Option D. -> Climatic conditions
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: Option B. -> Energy
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: Option C. -> save the pastures from being overgrazed
Answer: (c)
Lions provide important ecological and cultural functions. As apex and keystone predator, lions help to regulate prey populations; they also will scavenge if the opportunity arises.
Culturally, the lion (and particularly the male with its highly distinctive mane) is one of the most widely recognized animal symbols in human culture and the lion plays a key role in save the pastures from being overgrazed.

Answer: Option D. -> Sun
Answer: (d)An ecosystem is a community of living and nonliving things that work together. It includes soil, atmosphere, heat and light from the sun, water and living organisms.

Answer: Option C. -> coastal swamps
Answer: (c)
Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics – mainly between latitudes 25° N and 25° S. There are about 80 different species of mangrove trees.
All of these trees grow in areas with low-oxygen soil, where slow-moving waters allow fine sediments to accumulate.

Answer: Option C. -> the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms
Answer: (c)
The biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, geosphere, hydrosphere, and atmosphere.
The biosphere is made up of the parts of Earth where life exists. It is the worldwide sum of all ecosystems.

Answer: Option B. -> Coniferous forests
Answer: (b)Taiga is a biome characterized by coniferous forests consisting mostly of pines, spruces and larches. It is the world’s largest terrestrial biome.