Download App

STD 12 - 12. ecosystem — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 12. ecosystem1 Mark
MCQ
Humus is important for plant growth because
  • A
    It is partially decomposed
  • B
    It is derived from leaves
  • ✓
    It is rich in nutrients and increases the water holding capacity of soil
  • D
    It is made up of dead organic matter
✓

Answer

Correct option: C.
It is rich in nutrients and increases the water holding capacity of soil
c
(c)Humus is total organic matter in the soils. It is rich is $NPK$. The humus is formed from decay and decomposition of dead plant and animal matter. The humus soil is the best soil as it has got high water holding capacity, high porocity, aeration and high organic content.

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 "M.C.Q (1 Marks)" from STD 12 - 12. ecosystem→STD 12 - 12. ecosystem — all question types→Biology STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
→
Cyclosporin $A$, used as immunosuppression agent, is produced from
→
What is the best $pH$ of the soil for cultivation of plants?
→
If a boy's father has haemophilia and his mother has one gene for haemophilia; what is the chance that the boy will inherit the disease
→
Who gave rivet popper hypothesis ?
→
What is correct for pills ?
→
$DNA $ fingerprinting method is very useful for
→

Match the following columns.

Column-IColumn- II
$(A)$ Hepatitis$-B$$(1)$ $HIV$
$(B)$ $AIDS$$(2)$ $HBV$
$(C)$ Genital worts$(3)$ $HPV$
→
Which raw material is used in fermentation
→
Caruncle of albuminous dicot seed is derived from $.........$
→