Tag: natural resources - air, water and land

Quizzes (38) Questions (45)

Questions Related to natural resources - air, water and land

Multiple choice biology natural resources - air, water and land soil - formation and profile soil-nature soil profile

Deep black soil is considered to be highly productive due to high proportion of

  1. Silt and earthworm

  2. Clay and humus
  3. Gravel and $Ca^{++}$

  4. Sand and Zn
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deep black soil (often called Regur or Black Cotton soil) is highly productive because it is rich in clay, which retains moisture, and humus, which provides essential nutrients for plant growth.

Multiple choice biology natural resources - air, water and land soil - formation and profile soil-nature soil profile

The top most layer of soil contains

  1. Humus, living organism and soil

  2. Human, living organism and plants

  3. Humans and soil particles

  4. Human and microorganism
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The top most layer of soil is said to contain and support a lot of living organisms. It also has organic manure in it that supports the growth and development of plants. 

So, option a "Humus, living organisms and soil" is the correct answer.

Multiple choice biology natural resources - air, water and land soil - formation and profile soil-nature soil profile

Soil contain rock particles

  1. Water and plants

  2. Minerals, organic matter, air and water

  3. Air and plants

  4. Air, water and plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The soil is formed by weathering of rocks. It contains an organic material (dead decay of leaves and plants) called humus, which makes soil fertile, and mineral by the breakdown of rocks. It also contains soil and water. Thus, the correct option is B.
Multiple choice zoology natural resources - air, water and land carbon cycle ozone layer depletion and causes depletion of ozone layer

Identify the incorrect statement from the following

  1. Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer

  2. Ozone absorbs the intense ultraviolet radiations of the sun

  3. Depletion of ozone layer is because of its chemical reactions with CFC

  4. Ozone absorbs infrared radiations
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ozone doesn't absorb infrared radiation , it absorbs ultraviolet radiations .