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Class 11 | CBSE | BIOLOGY
1.1 Diversity in the Living World | ASSERTION–REASON QUESTIONS
ASSERTION–REASON QUESTIONS (Exam Favourite) based on
Class 11 Biology – Chapter 1: The Living World
Section: 1.1 Diversity in the Living World
— framed exactly as per CBSE / NEP pattern with answers + reasoning.
ASSERTION–REASON QUESTIONS
(Choose the correct option)
Options:
A. Both Assertion (A) and Reason (R) are true and R is the correct explanation of A
B. Both A and R are true but R is NOT the correct explanation of A
C. A is true but R is false
D. A is false but R is true
Q1
Assertion (A): There is a need for scientific naming of living organisms.
Reason (R): Common names of organisms vary from place to place.
✅ Correct Answer: A
✔ Both statements are true
✔ Variation in common names causes confusion → scientific naming needed
Q2
Assertion (A): Binomial nomenclature is universally accepted for naming organisms.
Reason (R): It gives each organism a single, standardised name.
✅ Correct Answer: A
✔ Two-word naming ensures uniformity
✔ Correct explanation
Q3
Assertion (A): Mangifera indica is written in italics or underlined when handwritten.
Reason (R): Scientific names are derived from English language.
✅ Correct Answer: C
✔ A is true
❌ R is false (names are Latin or Latinised, not English)
Q4
Assertion (A): The genus name always begins with a capital letter.
Reason (R): The genus name represents a higher taxonomic category than species.
✅ Correct Answer: A
✔ Both true
✔ Genus is taxonomically higher → conventionally capitalised
Q5
Assertion (A): The author’s name is written after the scientific name of an organism.
Reason (R): It indicates the habitat where the organism is found.
✅ Correct Answer: C
✔ A is true
❌ R is false (author name indicates who first described the species)
Q6
Assertion (A): Classification makes the study of organisms easier.
Reason (R): It groups organisms based on similarities and differences.
✅ Correct Answer: A
✔ Logical and correct explanation
Q7
Assertion (A): ‘Dogs’, ‘mammals’ and ‘animals’ represent taxa at different levels.
Reason (R): A taxon is a category of classification.
✅ Correct Answer: A
✔ Both correct
✔ Reason explains assertion clearly
Q8
Assertion (A): Taxonomy includes characterisation, identification, classification and nomenclature.
Reason (R): Taxonomy also studies evolutionary relationships.
✅ Correct Answer: B
✔ A is true
✔ R is true but refers to systematics, not taxonomy alone
Q9
Assertion (A): Systematics is broader than taxonomy.
Reason (R): Systematics considers evolutionary relationships among organisms.
✅ Correct Answer: A
✔ Perfect explanation-based question
Q10
Assertion (A): Early classification of organisms was based on their uses to humans.
Reason (R): Humans needed food, clothing and shelter for survival.
✅ Correct Answer: A
✔ Both statements true
✔ Reason explains historical classification basis
EXAM STRATEGY (VERY IMPORTANT)
✔ Read Reason carefully – many are partially true
✔ If Reason explains why Assertion is true → Option A
✔ If both are true but unrelated → Option B
✔ One false → C or D