Question

Which one of the following options represents the correct order with respect to levels of organization? B – biomes; E – ecosystems; P – populations; I – individuals; C – communities

• A. I <P <C <E <B
• B. I <C <P <E <B
• C. I <E <C <P <B
• D. I <P <E <C <B

Hint:

Remember the ladder: \textbf{I}ndividual \(\Rightarrow\) \textbf{P}opulation \(\Rightarrow\) \textbf{C}ommunity \(\Rightarrow\) \textbf{E}cosystem \(\Rightarrow\) \textbf{B}iome.

Answer 1

The Correct Option is A

Step 1: Define each level succinctly.
Individual (I): one organism.
Population (P): all individuals of a species in an area.
Community (C): interacting populations (multiple species).
Ecosystem (E): community + abiotic environment (energy/material flows).
Biome (B): large regional complex of ecosystems with characteristic climate/vegetation (e.g., tropical rainforest).

Step 2: Order from smallest to largest.
\[ I \Rightarrow P \Rightarrow C \Rightarrow E \Rightarrow B. \] This matches option (A) only. Final Answer:
\[ \boxed{\text{(A) } I<P<C<E<B} \]