Tag: protecting our environment

Questions Related to protecting our environment

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

Show answer
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

Show answer
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

Show answer
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. 

Which of the following is associated with evil quartet?

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

  1. Three horsemen

  2. Hunters

  3. Four horsemen

  4. None of the above

Show answer
Correct Option: C
Explanation:
The evil quartet also known as four horsemen of the apocalypse explains the four main human-induced causes of extinction which were habitat degradation, fragmentation, the introduction of exotic species and over-harvesting. Thus, the correct answer is option B.

Asseration : Recently, the government of India instituted the 'Amrita Devi Bishnoi Wildlife Protection Award'.

Reason : We can speed up the reforestation by planting trees.

evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

  3. Assertion is correct but Reason is incorrect.

  4. Both Assertion and Reason are incorrect.

  5. If the Assertion is false but Reason is true.

Show answer
Correct Option: B
Explanation:

'Amrita Devi Bishnoi Wild Life Protection Award' is given for significant contribution in the field of wildlife protection, which is recognised as having having done exemplary work for the protection of wildlife. A cash award of rupees one lakh is presented to individuals / institutions involved in wildlife protection.

Reforestation means replanting of forest trees in areas, which were once having dense forests but the forests were later on destroyed by cutting of trees in large numbers. 
Thus, the correct answer is option B.

Which one of the following is not a method of soil conservation?

evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

  1. Mulching

  2. Overgrazing

  3. Strip cropping

  4. Crop rotation

Show answer
Correct Option: B
Explanation:

Soil conservation is the process of prevention of soil erosion and to prevent the soil from becoming infertile.  In mulching, a protective layer is placed over the soil such as straw, grasses etc., which helps in retaining soil moisture and also regulates soil temperature. Strip cropping is a process in which field is divided into strips and different crops are grown in alternate strips to preserve soil fertility. Crop rotation means growing of different types of crops on the same field in succession which prevents the depletion of nutrients from the soil. Overgrazing or intense grazing will erode the soil.

Thus, the correct answer is option B.

Crop rotation is helpful because

commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

  1. lt provides more nitrates in the soil.

  2. lt provides more sulphates in the soil.

  3. lt provides more potassium in the soil.

  4. lt provides more phosphorus in the soil.

Show answer
Correct Option: A
Explanation:

If the same crop is grown year after year, fertility of soil is lost due to utilization of same minerals again and again, thus, disturbing the soil structure, which facilitates soil erosion. Legumes are useful in rotation of crops because of having nodulated roots which harbour nitrogen fixing Rhizobium bacteria and it leaves more nitrates in the soil when the roots are left over in fields and only aerial parts of legume crops are harvested.