Download App

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

CBSE 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 (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

Removal of $RNA$ polymerase $III$ from nucleoplasm will affect the synthesis of
→
Sickle cell-anaemia disorder arises due to
→
Choose the mis -matched option.
→
Assertion : Leguminous plants are nitrogen fixers.

Reason : Leguminous plants have Rhizobium in their root nodules.

→
Select the incorrect statement w.r.t. ecotypes
→
Select the correct option:

Direction of $RNA$                 Direction of reading of
  synthesis                                the template $DNA$ strand

→
Which concept was not included in charlesDarwin's theory of natural selection ?
→
Endosperm may completely be consumed by the developing embryo before in maturation in:
→
The method by which recombinant DNA can be injected directly into the nucleus of an animal cell is:
→
Genetic variation in a population arises due to
→