Download App

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

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 12. ecosystem1 Mark
MCQ
Humus is
  • A
    Dark coloured amorphous organic matter rich in lignin
  • ✓
    Dark coloured organic matter rich in cellulose
  • C
    Both $(a)$ and $(b)$
  • D
    Red coloured substances rich in iron
✓

Answer

Correct option: B.
Dark coloured organic matter rich in cellulose
b
Humus is dark coloured amorphous substance rich in lignin and cellulose

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 (0.5 Marks)" from STD 12 - 12. ecosystem→STD 12 - 12. ecosystem — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If natality is represented by $-B$

If mortality is represented by $-D$

If immigration is represented by $-I$

If emigration is represented by $-E$

If population density is represented by $-N$

Then population density at time $t+1$ is represented by

→
Microsporogenesis is a synonym for
→
They are tertiary and secondary consumers respectively
→
$A$ - Sickle-cell anaemia is sex linked recessive trait

$R$ - This disease is controlled by more that two pair of alleles

→
Fusogen of protoplast culture is?
→
Adaptive radiation leads to which of the following?
→
Perisperm differs from endosperm in
→
Which of the following is a parasitic animal?
→
In global biodiversity of plants, the
→
Assumption that genetic code is a triplet was suggested by?
→