NECO 2003 Biology · Question 13

A population can be referred to as the number of

Options

A.adult organisms in an ecosystem
B.female species in an ecosystem
C.male species in an ecosystem
D.organisms of same species in an ecosystem
E.organisms that can withstand harsh conditions

Answer: D. organisms of same species in an ecosystem

Explanation written with AI and checked against the answer key

Step 1: Analyze the question The question asks for the definition of a population in ecology.

Step 2: Explain the concept In ecology, a population is a group of organisms of the same species living together in the same area (habitat or ecosystem) at the same time. Key points:

Same species (they can interbreed)
Same place
Same time
Includes all ages and both sexes

Step 3: Evaluate the options

A. Adult organisms in an ecosystem: Wrong. A population includes young and old, not only adults.
B. Female species in an ecosystem: Wrong. It leaves out the males.
C. Male species in an ecosystem: Wrong. It leaves out the females.
D. Organisms of same species in an ecosystem: Correct. This matches the definition exactly.
E. Organisms that can withstand harsh conditions: Wrong. Survival ability has nothing to do with the definition.

Step 4: Answer The correct option is D.

Tip: Remember the ecological hierarchy: Individual → Population (same species) → Community (different species together) → Ecosystem (community + environment).

If the question says "same species", think population. If it says "different species", think community.

AI can make mistakes. Report anything that looks wrong.