Advertisements
Advertisements
Question
Soil formation can be initiated by biological organisms. Explain how?
Solution
Soil formation is initiated by the biological weathering process. Biological weathering takes place when organisms like bacteria, fungi, lichens, and plants help in the breakdown of rocks through the production of acids and certain chemical substances.
RELATED QUESTIONS
Ophrys an orchid resembling the female of an insect so as to able to get pollinated is due to phenomenon of
A free-living nitrogen-fixing cyanobacterium which can also form a symbiotic association with the water fern Azolla
Strong, sharp spines that get attached to animal’s feet are found in the fruits of
Why are some organisms called as eurythermals and some others as stenohaline?
The organic horizon is generally absent from agricultural soils because tilling, e.g., plowing, buries organic matter. Why is an organic horizon generally absent in desert soils?
Sandy soil is not suitable for cultivation. Explain why?
What is thermal stratification? Mention their types.
What is myrmecophily?
What is a seed ball?
Explain Raunkiaer classification in the world’s vegetation based on the temperature.
What are the advantages of seed dispersal?
Describe the dispersal of fruit and seeds by animals.
Read the following statements and fill up the blanks with the correct option.
- Total soil water content in soil is called ______
- Soil water not available to plants is called ______
- Soil water available to plants is called ______
Column I represent the size of the soil particles and Column II represents the type of soil components. Which of the following is the correct match for the Column I and Column IL
Column - I | Column - II | ||
I) | 0.2 to 2.00 mm | i) | Slit soil |
II) | Less than 0.002 mm | ii) | Clayey soil |
III) | 0.002 to 0.02 mm | iii) | Sandy soil |
IV) | 0.002 to 0.2 mm | iv) | Loamy soil |
What is the soil profile? Explain the characters of different soil horizons.