NEET · Biology · Class 11The Living World — NEET Biology MCQs
30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.
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Sample questions from this chapter
Why is classification indispensable for studying the living world?
- It organises vast diversity into convenient groups for systematic study. ✓
- It assigns organisms to permanent groups using body size alone.
- It replaces descriptions with local names familiar in each region.
- It proves that all members of a kingdom possess identical characters.
Answer: A. Classification makes millions of diverse organisms manageable by grouping them through shared characters. The size-only idea is tempting because simple visible traits were used in early artificial schemes, but one trait cannot support modern classification.
Why not B: This reduces modern classification to one conspicuous artificial character.
Why not C: Local names create ambiguity; standard scientific naming addresses it.
Why not D: Broader taxa contain diversity and share fewer, not identical, characters.
A school groups the same pupils by age for sport and by language for a cultural event. Which taxonomic principle does this model?
- Every organism must occupy only one convenient group.
- A useful classification must always be based on ancestry.
- Groups can be formed using selected characters suited to the purpose. ✓
- A category remains valid only when every member is identical.
Answer: C. Classification groups entities into convenient categories on the basis of selected observable characters. The ancestry option is tempting because systematics considers evolution, but the school example specifically illustrates purpose-dependent grouping.
Why not A: Organisms occupy nested taxa, and grouping can depend on the comparison being made.
Why not B: Modern systematics uses ancestry, but ordinary classification can illustrate chosen observable criteria.
Why not D: Classification depends on shared diagnostic features, not complete identity.
Assertion (A): A scientific name can be applied reliably only after the organism is correctly described and recognised.
Reason (R): Identification establishes the organism to which an accepted name is attached.
- Both A and R are true, and R is the correct explanation of A. ✓
- Both A and R are true, but R is not the correct explanation of A.
- A is true, but R is false.
- A is false, but R is true.
Answer: A. Both statements are true, and identification explains why nomenclature requires prior correct description and recognition. Option B is tempting when the two processes are memorised as separate vocabulary rather than as linked steps.
Why not B: Students may know both definitions but miss that recognition is precisely what makes naming reliable.
Why not C: This treats identification as the creation of a name rather than the matching of an organism.
Why not D: This accepts identification while overlooking that nomenclature depends on it.
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Other NEET Biology chapters
Biological ClassificationPlant KingdomAnimal KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsStructural Organisation in Animals
All 32 chapters →
Questions
How many NEET questions are there on The Living World?
This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 11 chapter.
Is this NEET Biology chapter test free?
Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.
Do the questions explain the wrong options?
Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.