Tag: earth - our home

Questions Related to earth - our home

The environment as a self sustaining system is mainly preserved by 

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Man

  2. Animals

  3. Trees

  4. Wild life

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Correct Option: D
Explanation:

Environment is preserved as a self-sustaining system by wildlife. Wildlife includes various living organism which are interdependent on each other and able to meet the basic requirement for survival.

The species though insignificant in number; determine the existence of many other species in a given ecosystem. Such species is known as

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Extinct species

  2. Keystone species

  3. Endemic species

  4. Sacred species

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Correct Option: B
Explanation:

A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance. Such species are described as playing a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community. 

Extinction is the end of an organism or of a group of organisms (taxon), normally a species.
Endemic species is one that is only found in that region and nowhere else in the world. They are of conservation concern because they are not widespread and may be confined to only one or two protected areas. 
Certain life forms, often a keystone species, are sacred to indigenous peoples because they present a body of knowledge and ways leading to balanced relationship with life.

Wildlife protection act was enacted in India in 

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. 1947

  2. 1962

  3. 1972

  4. 1992

Show answer
Correct Option: C
Explanation:

The Wildlife Protection Act, 1972 is an Act of the Parliament of India enacted for protection of plants and animal species. The Act provides for the protection of wild animals, birds and plants.

Therefore, the correct answer is option C.

Wild life (protection) Act, 1972 includes which of the following objectives?

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Restriction and Prohibition on hunting of animals.

  2. Setting up and managing sanctuaries and National Parks.

  3. Protection of specified plants.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

The Wildlife Act was passed in 1972 to protect the wildlife and their habitats. The major activities and provisions in the act can be summed up as follows: 

1. It defines the wildlife related terminology. 
2. Enactment of an All India Wildlife Protection Act (1972). 
3. It provides for the appointment of wildlife advisory Board, Wildlife warden, their powers, duties etc. 
4. Becoming a party to the Convention of International Trade in Endangered Species of Fauna and Flora (CITES, 1976). 
5. Launching a national component of UNESCOs Man and Biosphere Programme (1971). 
6. Under the Act, comprehensive listing of endangered wildlife species was done for the first time and prohibition of hunting of the endangered species was mentioned. 
7. Protection to some endangered plants. 
8. The Act provides for setting up of National Parks, Wildlife Sanctuaries etc. 
9. The Act provides for the constitution of Central Zoo Authority. 
10. There is provision for trade and commerce in some wildlife species with license for sale, possession, transfer etc.
11. The act imposes a ban on the trade or commerce in scheduled animals. 
12. It provides for legal powers to officers and punishment to offenders.
Therefore, the correct answer is option D.

Best method to preserve the wild relatives of plants is

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. By growing them in natural habitats

  2. Gene library

  3. By storing seeds

  4. Cryopreservation

Show answer
Correct Option: A
Explanation:

The genetic material from wild varieties can be preserved either in gene banks or in-situ preservation. Gene bank saves the genes and other regenerative material from a wide range of plants. In-situ, is the preservation of wild variety of plants in the fields and forests where they grow. Thu, the correct answer is option A.

Find the odd one out:

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Methanobacteria

  2. Pseudomonas

  3. Clostridium

  4. E.coli

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Correct Option: D
Explanation:

Biogas constitutes 50-80% methane and rest carbon dioxide. Methane is produced by anaerobic degradation of organic matter. Methanobacteria is responsible for production of methane. Pseudomonas and Clostridium is responsible anaerobic degradation of complex organic polymers. E.coli is not involved in the production of biogas.

Wild buffalo is an endangered species because

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Its population diminishing

  2. It has become extinct

  3. It is found exclusively in a particular area

  4. Its poaching is strictly prohibited

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Correct Option: A
Explanation:

An endangered species is a native species that faces a significant risk of extinction in the near future throughout all or a significant portion of its range.

Which among the following help in replacing the use of conventional energy?

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Solar energy

  2. Coal

  3. $\displaystyle { KH } _{ 2 }{ PO } _{ 4 }$

  4. Petrol

Show answer
Correct Option: A
Explanation:

As the population is growing at the fast pace, it is very important to manage the use to conventional resources. Replacing or reducing the conventional natural resource by non-conventional resources shall help in benefiting the future generation.

Which of the following has to be observed to protect wildlife?

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Prevent deforestation

  2. Place ban on poaching

  3. Place ban on visiting sanctuaries

  4. Both A and B

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Correct Option: D

Biogas is a result of ______

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Anaerobic process

  2. Aerobic process

  3. Chemical agents

  4. Mechanical process

Show answer
Correct Option: A
Explanation:

Biogas constitutes 50-80% methane and rest carbon dioxide. Methane is produced by anaerobic degradation of organic matter.