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CDS · Biology
BC06 — Ecology & Environment — Quiz
CDS
20 Questions
No Negative Marking
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Question 1
Which ecological pyramid is ALWAYS upright and can NEVER be inverted?
A
Pyramid of Numbers
B
Pyramid of Biomass
C
Pyramid of Energy
D
Pyramid of Numbers and Biomass
Question 2
The '10% rule' in ecology (Lindemann's law) states that:
A
Only 10% of species survive environmental change
B
Only 10% of energy at one trophic level transfers to the next
C
10% of population controls 90% of food resources
D
Food chains must have at least 10 links
Question 3
Rhizobium bacteria fix atmospheric nitrogen in:
A
Free soil (non-symbiotic)
B
Root nodules of leguminous plants (symbiotic)
C
Aquatic ecosystems only
D
Leaves of cereal crops
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