Download App

Ecosystems — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems1 Mark
MCQ
_________ are the cyclic pathways through which chemical elements move from environment to organism and back to the environment.
  • A
    Biogeochemical cycles
  • B
    Geo-chemical cycles
  • C
    Physio-chemical cycles
  • D
    All of the above
✓

Answer

  1. Biogeochemical cycles

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 Ecosystems→Ecosystems — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Filaria germ is a kind of
→
Match the items in Column ‘A’ and Column ‘B’ and choose correct answer.
 
Column A
 
Column B
i.
Lady bird
a.
Methano bacterium
ii.
Mycorrhiza
b.
Trichoderma
iii.
Biological control
c.
Aphids
iv.
Biogas
d.
Glomus
The correct answer is:
→
Two pea plants were subjected for cross pollination. Of the $183$ plants produced in the next generation, $94$ plants were found to be tall and $89$ plants were found to be dwarf. The genotypes of the two parental plants are likely to be
→
Spread of $AIDS$ does not occur through
→
The disease, sickle-cell anaemia, is caused by:
→
Statin is used for:
→
The rupturing of graafian follicle and release of ovum is known as:
→
Temperate evergreen forests are found in:
→
Embryo sac is to ovule as _______ is to an anther.
→
In some tribes, the population does not grow appreciably because of:
→