Tag: protecting our environment

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Questions Related to protecting our environment

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

Best method to preserve the wild relatives of plants is

  1. By growing them in natural habitats

  2. Gene library

  3. By storing seeds

  4. Cryopreservation
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Find the odd one out:

  1. Methanobacteria

  2. Pseudomonas

  3. Clostridium

  4. E.coli
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Wild buffalo is an endangered species because

  1. Its population diminishing

  2. It has become extinct

  3. It is found exclusively in a particular area

  4. Its poaching is strictly prohibited
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. Solar energy

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

  4. Petrol
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Which of the following is associated with evil quartet?

  1. Three horsemen

  2. Hunters

  3. Four horsemen

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
Multiple choice 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

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

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

  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.
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice 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

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

  1. Mulching

  2. Overgrazing

  3. Strip cropping

  4. Crop rotation
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Crop rotation is helpful because

  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.
Reveal answer Fill a bubble to check yourself
A Correct answer
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.