Tag: reduce, recycle, reuse

Questions Related to reduce, recycle, reuse

Most harmful environmental pollutants are 

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Biodegradable

  2. Corrosive agents

  3. Non-biodegradable chemicals

  4. Toxic chemicals

Show answer
Correct Option: C
Explanation:

Waste that cannot be broken down by other living organisms is called as non-biodegradable. Non-biodegradable substances affect the environment. They may enter the food chain and harm the organisms in the higher trophic levels (by biomagnification), e.g., pesticides, like DDT, non-biodegradable substances like radioactive wastes, lead, mercury etc., affect the health of all living organisms. 

Waste are of two types, biodegradable and non-biodegradable.

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Wastes are of two types biodegradable and non-biodegradable. Biodegradable waste is an organic matter which can be broken down into simple organic molecules by micro-organisms using composting or digestion. Biodegradable products include paper, clothes, fruit, cardboard, vegetables.

Non-biodegradable waste is a type of waste that cannot be broken down into its base compounds by micro-organisms in a reasonable amount of time. Non-biodegradable products include plastic, metal, construction waste and electronics. 
Thus, the correct answer is option A.

Which of the following is non-biodegradable?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Tea leaves

  2. Nylon

  3. Remains of animals

  4. Fleece of sheep

Show answer
Correct Option: B
Explanation:

The correct answer is 'nylon'

Nylon is a synthetic polymer that is known for its resistance to biological degradation and is thus non-biodegradable. Tea leaves remain of animals and fleece of sheep are all natural things on which the enzymes of the microbes can be functional and thus can be degraded by them.

 Which of the following is a biodegradable organic substance?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Plastics

  2. Oils

  3. Pesticide

  4. Garbage

Show answer
Correct Option: D
Explanation:

The term biodegradable is used to describe materials that decompose through the actions of bacteria, fungi, and other living organisms. Organic substances are carbon containing substances. Thus, garbage can be biodegradable organic substance.

DDT (dichloro diphenyl trichloroethane) is an example of 

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Biodegradable waste

  2. Non-biodegradable waste

  3. Vermicompost

  4. None of these

Show answer
Correct Option: B
Explanation:

The substance which cannot be broken down easily like pesticides, insecticides (DDT), mercury, glass particles etc. These remains as such in environment for a very very long time. 

What does E-waste stand for?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Environment waste

  2. Electronic waste

  3. Equipment waste

  4. All of the above

Show answer
Correct Option: B
Explanation:

Electronic waste or e-waste describes discarded electrical or electronic devices. Used electronics which are destined for reuse, resale, salvage, recycling or disposal are also considered e-waste.

Non-biodegradable wastes are 

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Biological in origin

  2. Commonly man made

  3. Degraded by microbes

  4. Do not accumulate in nature

Show answer
Correct Option: B
Explanation:

Non-biodegradable wastes can not be broken down by decomposes because they do not have enzymes for the same. They are commonly man made. They are not degraded by micro organism. They pile up and accumulate in nature. 

Biodegradable waste can be _______

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Naturally degraded

  2. Artificially degraded

  3. Lead enter food chain and lead to biomagnification

  4. All

Show answer
Correct Option: A
Explanation:

Biodegradable wastes are naturally degraded by microbes they can also be disposed of thoughts waste treatment plants or converted into an agriculture resources of nature and compost. 

Which of the following groups contain only bio-degradable items?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Grass, flowers and leaves

  2. Grass, wood and plastic

  3. Fruit peels, cake and plastic

  4. Cake, wood and glass

Show answer
Correct Option: A
Explanation:
 Biodegradable materials are the substances made of organic matter, such as plant and animal matter, that can be easily broken down by detritus organisms
 For example, vegetable peels and other kitchen waste, vegetables, fruits, tea leaves, paper, wood, etc.
Whereas non-biodegradable materials are those materials, which cannot be broken down easily, and retain their form for a long period of time. For example, metals, tin, glass, plastics etc. 
So, the correct answer is 'Grass, flowers and leaves'

An analysis of soil sample revealed $0.1 mg$ of a pesticide and $1 mg$ of the same of pesticide was found in grains. However in the adipose tissue of birds the concentration was $2 mg$. The reason for this is the phenomenon known as

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Bioabsorption

  2. Biotranslocation

  3. Biomagnification

  4. Biomulitiplication

Show answer
Correct Option: C
Explanation:

Biomagnification is the accumulation or increasing bioconcentration of lipophilic pesticides in the top members of the food chain. During biomagnification, the concentration of pesticides goes on increasing according to the food chain and highest values occur in the consumers of the top trophic level. So, the value of pesticide will go on increasing from the soil, to the plant and to the bird. 

Thus, the correct answer is option C.