Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology hygiene - a key to healthy life community health hygiene first aid

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

  1. Blood flow slows down

  2. Stroke volume increases

  3. Healthy heart rate is maintained

  4. Muscles grow loose
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Which of the following groups contain only biodegradable items?

  1. Glass, flowers and leather

  2. Wood and grass

  3. Fruit-peels, cake and lime-juice

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
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. 

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

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

  1. Rot completely and not smell

  2. Rot almost completely, but still smell bad

  3. Rot only partially

  4. No change at all
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
Multiple choice biology garbage in, garbage out waste management and its methods garbage disposal solid waste and control

Biodegradable pollutants have following characters except:

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

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

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

The methods of disposal of kitchen waste is

  1. Composting

  2. Landfilling

  3. Weeding

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
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.