Science M.C.Q. [I MARKS]

The introduction of exotic species into an area disturbs the natural ecology balance. They compete with the native species for nutrients, shelter and spread new diseases.

Poaching that endanger animals is the result of the interference of man with nature.

As the earth becomes hotter, the ice will melt on the poles and which will result in sea level rise. Moreover, as the earth becomes hotter, it will make forests dry and more susceptible to forest fires. But global warming has no effect on soil and its fertility.

Endemic species are those species of plants and animals which are found exclusively in a particular area. They are not naturally found anywhere else. Endemic species are not included under red list because the red list contains those species whose continued existence is threatened. Each Red Data Book usually deals with a specific group of animals or plants (e.g.,reptiles, insects, mosses).

Blackbuck, elephant, python and golden at together represent fauna in a forest. The animals of particular area called fauna of that area. Flora is the plants of a particular area.
Ecosystem includes all the living organisms of an area and their physical environment. Species is a group of population which are capable of interbreeding.

Forests are biodiversity hot spots.

Fauna is the animal life occurring in a particular region. The corresponding term for plant life is flora. Blue-bull, barking deer, cheetal, leopard, wild dog and wolf are examples of fauna of the Pachmarhi Biosphere Reserve.

The domestic yak (Bos grunniens) is a long-haired domesticated bovid found throughout the Himalaya region of southern Central Asia, The yak-rearing states of India are Arunachal Pradesh, Sikkim, Uttar Pradesh, Himachal Pradesh and Jammu and Kashmir.

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. It is due to coexistence of these spheres the life can exist on earth.

Sanjay Gandhi National Park, formerly Borivali National Park, is a large protected area in the northern part of Mumbai city in Maharashtra State in India.

Birds travelling long distances seasonally, to reach faraway lands with suitable climate conditions, are called migratory birds. They migrate each year at a particular season to escape from harsh climatic conditions. Examples of migratory birds include the Arctic tern and Siberian crane.

The non-living or abiotic components of an ecosystem are air, water, temperature, soil etc.

Habitat destruction, over use of natural resources and manss interference with nature pose a threat to biodiversity.

Deforestation increases the carbon dioxide content in the atmosphere which results in the greenhouse effect.

Swarming is the mass emigration of bees to settle down elsewhere in order to form a new hive.

The proper management of the environment is important to maintain the balance nature so that both animals and man can continue to live.

Indian rhinoceros is a vulnerable animal.

Deforestation causes soil erosion causes desertification and floods. It can be prevented by afforestation, proper land management and preventing overgrazing.

Cycling of cardboard cartons will lead to a decrease in the level of tree cutting and hence conserve forests.

The asiatic lion, also known as the indian lion and persian lion, is a lion subspecies that lives as a single population in india’s gujarat state. It is listed as endangered on the iucn red list because of its small population size.

Drought which is caused due to lack of rains results in decreased food production.

Excess timber logging results in deforestation which causes flooding soil erosion, etc. Selective logging (i.e. the logging of only matured trees should be practised). Reforestation helps in minimizing the effect mismanagement.