Humus
Trending Questions
What is humus ? What are its functions ?
What is the role of microbes in soil?
- Loam
- Top soil
- Subsoil
- Bedrock
What is Humus? Mention its importance in two points.
Differentiate between humification and mineralization.
What is humification ?
The superficial layer that covers large areas of earths crust is called soil.
True
False
Breakdown of bigger rocks into fine smaller mineral particles is called:
Paedogenesis
Weathering
Mineralization
Cracking
Humus is the dead and decaying bits of animals and plants present in the topmost layer of soil. True or false?
- True
- False
Give one function which is not performed by the humus.
How does humus play a role in deciding the soil structure and provides nutrition to the plants?
It is an organic layer formed from the dead and decaying material.
It helps to retain moister and nutrients.
- It influences the bulk density of the soil by keeping the layer of soil loose and full of air pockets.
- All of the above.
Quality of soil is decided by the amount of humus and microscopic organisms present in it.
True
False
- picking up of rock fragments
- movement of rock fragments
- mechanical and chemical breakup of rocks
- formation of rocks by the action of weather
- Lichen
- Saline water
- Sun
- Humus
- picking up of rock fragments
- movement of rock fragments
- mechanical and chemical breakup of rocks
- formation of rocks by the action of weather
- Microbes decompose the dead remains of plants and animals
- Addition of partially decomposed organic material i.e. humus takes place into weathered rock
- Release of mineral takes place due to decomposition of organic matter
- All the above
- Humus
- Mineral matter
- Water
- Living microorganisms
Humus is the dead and decaying bits of animals and plants present in the topmost layer of soil. True or false?
- True
- False
- Bacteria
- Fungi
- Earthworms
- Viruses