What is humus? What are its functions? - Vidyadip

Question

What is humus? What are its functions?

✓

Answer

Humus is the dark organic matter that forms in the soil when plant and animal matter decays. It contains many useful nutrients for healthy soil.

Functions of humus in soil are:

Humus increases the fertility of soil.
It also helps soil absorb and retain moisture.
Humus also promotes the formation of good soil structure.
It supports microbial activity in soil, through which roots absorb nutrients.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Bio-3M]" from Natural Resources→Natural Resources — all question types→Science STD 9 question papers→CBSE Board STD 9 question papers→CBSE Board question paper generator→

Similar questions

Enlist various types of species diversity.

Name in which:

Virus, bacterium and protozoa can be causal agent.

Write down four general characters of phylum Echinodermata. Give two examples.

Doctor diagnosed that Radha was suffering from HIV-AIDS. List any two methods by which she might have contracted the disease. Name the organ affected by this disease.

Explain various effects of weeds on crop plants.

Mention two differences between blood and lymph?

The production of food from animal sources has increased greatly in the last few decades. Justify it.

How is typhoid tested?

Give an account of structure and function of xylem.

Define eutrophication. What is ill effect of eutrophication?