Tag: biology

Questions Related to biology

Which one of the following is a long term effect of a healthy and active lifestyle?

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  1. Blood flow slows down

  2. Stroke volume increases

  3. Healthy heart rate is maintained

  4. Muscles grow loose

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Correct Option: C
Explanation:

Exercise is very important for ones body, daily exercising with a balanced diet helps keep our heart and body strong, fit and healthy. Our circulatory system and all other body systems are also very active thus, chances of stroke decreases, muscles grow strong and heart rate increases.

Which of the following groups contain only biodegradable items?

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  1. Glass, flowers and leather

  2. Wood and grass

  3. Fruit-peels, cake and lime-juice

  4. Both B and C

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Correct Option: D
Explanation:

Wastes that are capable of being broken down or decomposed rapidly by the actions of microorganisms are called as biodegradable wastes. Fruit-peels, cake, lime juice, wood and grass can be easily decomposed by the microbes. 

The rotting of garbage is said to be completed when the garbage

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Rot completely and not smell

  2. Rot almost completely, but still smell bad

  3. Rot only partially

  4. No change at all

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Correct Option: A
Explanation:
The rotting of garbage is said to be completed when the garbage has rotten completely without releasing any foul smell.
So, the answer is A.

Biodegradable pollutants have following characters except:

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. They are decomposed by microbes

  2. They are degraded rapidly

  3. They can be used to produce compost, manure, etc.

  4. Plastic, DDT are examples of biodegradble wastes

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Correct Option: D
Explanation:

DDT, plastics, broken glasses are example of non-biodegradable wastes

So, the correct answer is 'Plastic, DDT are examples of biodegradable wastes'

Garbage collected from our houses should be dumped in

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Garden

  2. A playground

  3. Land fill

  4. The road side

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Correct Option: C

The methods of disposal of kitchen waste is

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Composting

  2. Landfilling

  3. Weeding

  4. Both A and B

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Correct Option: D
Explanation:

The methods of disposal of kitchen waste include Composting as well as landfilling. Composting is a process in which organic matter like compost is decomposed. It is done with the help of certain micro-organisms which can utilize these organic substances and convert it into simpler substances. And landfilling is a process in which the compost is buried inside the land so that the gases produced by the rotten food and other organic material is disposed of. This also increases the nutritional value of the soil.

Which of these can not be decomposed easily in the compost pit?

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Milk tin

  2. Pizza delivery box

  3. Apple peel

  4. Tissue paper

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Correct Option: A
Explanation:

Milk tin would take years to decompose as it is made up of metals. Decomposition of metals takes longer time as compared to pizza box- cardboard, apple peel and tissue paper.

The low lying open area where the garbage if disposed of is called as

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Compost

  2. Landfill

  3. Parks

  4. Playground

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Correct Option: B

In which of the following method, garbage is disposed by burring them?

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Burning

  2. Landfill

  3. Composting

  4. Recycling

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Correct Option: B

Degradable waste can be disposed in

biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

  1. Blue bin

  2. Red bin

  3. Green bin

  4. Black bin

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Correct Option: C