wiz-icon
MyQuestionIcon
MyQuestionIcon
3
You visited us 3 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following is not true for humus?

A
Dark colored amorphous substance
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Highly resistant to microbial action
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Composed of complex phenolic compounds
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Produced by the process of mineralisation
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Produced by the process of mineralisation
The rate of catabolic action of different complex substances in the detritus is different. This produces two substances in the form of humus and inorganic nutrients through the process of humification and mineralisation respectively. Humification is the process by which simplified detritus gets converted into a dark coloured formless substance that is rich in cellulose, and phenolic compounds like lignin, tannins, resin, etc. This substance is known as humus. Its specific character is that it is highly resistant to microbial action and so,it undergoes extremely slow decomposition. It is slightly acidic, colloidal and functions as a huge reservoir of nutrients. Mineralisation on the other hand is the other aspect of catabolism where the nutrients present in the detritus matter is released into the soil and made available for plants to reuse.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Ecosystem Function
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon