Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology environmental pollution control of water pollution protecting our environment rules are for everyone

FOAM and the biologists from humboldt state university, california created an integrated waste water treatment, they use plants for purify mainly :-

  1. Sludge from water

  2. Nitrate and phosphate from water

  3. Heavy metals from water

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The main purpose of FOAM is to treat wastewater around a place called Arcata and the surrounding bay through a natural system.

So, the correct option is 'Sludge from water'.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Out of the total cost of various ecosystem services, the soil formation accounts for about:-

  1. $50\%$
  2. $10\%$
  3. $6\%$
  4. $71\%$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Out of the aggregate expense of different ecosystem services, the dirt arrangement represents around 50 percent and commitments of different administrations like the diversion.

So, the correct option is '50%'.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Which of the following factors does not lead to soil formation in nature?

  1. The sun

  2. Water

  3. Wind

  4. Polythene bags
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Weathering is the name given to the process by which rocks are broken down to form soils. There are three main types of weathering, physical, chemical and biological. Polythene bags does not lead to soil formation in nature.
When they are thrown on land it makes soil less fertile. They slowly release toxic chemicals that certain animals use as a resource. These are a non-biodegradable waste. So, the correct answer is option D.
Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Major source of formation of soil is

  1. Rocks

  2. Snow covered mountains

  3. River beds

  4. Volcanoes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The parent material is the substance by which the soil is formed, these are generally rocks. Weathering and disintegration of rocks lead to the formation of soil. This is the major source of soil formation. So, the correct answer is option A.
Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Which of the following factor does not help in the formation of soil?

  1. Wind and water

  2. Decomposed plants and animals

  3. Rocks and temperature

  4. Water accumulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The surface layer of the earth's crust is called soil. It forms by the process of weathering and erosion. It takes a long time to form the soil. There are several factors that affect the process of soil formation. These are climate, topography, parent material, organic material and time span. Rainfall influence the rate of weathering and humus formation. Parent rocks determine the texture, colour, chemical properties, mineral content and quality. Topography i.e. slope and altitude decide the accumulation of soil. Flora, fauna and microbes affect the rate of humus formation. Time span determines the thickness of soil layer. Water accumulation does not help in the formation of soil.

So, the correct answer is option D.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

The most determining factor for soil formation is

  1. Parent rock

  2. Running water

  3. Humus

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

the presence and type of parent rock is the most determining factor in the formation of soil. This is because the parent decides what type of soil will be formed. The soil constituents, chemical nature, what type of crops it can grow is all determined by the type of parent rock.

So the correct answer is "A".