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By Swati Singh
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Updated on 15 Sep 2025, 16:05 IST
Download the free PDF of CBSE Class 11 Biology Worksheet – Chapter 1: The Living World (Set A). These printable worksheets are designed as per the latest syllabus and exam pattern and are available for both students and teachers.
Class 11 students are advised to practice the given questions and answers regularly to strengthen their understanding of important topics and chapters in Biology. Additional chapter-wise Biology worksheets prepared by subject teachers are also available for free download. Solving these worksheets daily, along with solutions, will help students improve knowledge, revise concepts effectively, and score higher in school exams and tests.
Class 11 Biology students can download the Chapter 1: The Living World worksheet in PDF format. This worksheet includes important questions with answers, making it highly useful for exam preparation and helping you score better marks.
The worksheets are based on the latest CBSE guidelines and OTBA topics. Students are encouraged to download and practice them regularly to strengthen their understanding and improve performance in examinations.
Q1. Define taxonomy.
Ans: Taxonomy is the science of identification, classification, and naming of organisms.
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Q2. What is meant by nomenclature?
Ans: Nomenclature is the system of assigning scientific names to organisms.
Q3. Write the scientific name of mango.
Ans:Mangifera indica.
Q4. Who is known as the father of taxonomy?
Ans: Carolus Linnaeus.
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Q5. What do we call the group of organisms capable of interbreeding?
Ans: Species.
Q1. Differentiate between species and genus with an example.
Ans: Species: Group of similar individuals that can interbreed (e.g., Homo sapiens).
Genus: Group of related species (e.g., Homo includes Homo sapiens and Homo erectus).
Q2. What are taxonomic aids? Name any two.
Ans: Taxonomic aids are tools used to study and classify organisms. Examples: Herbarium, Museums, Zoological parks, Flora, Manuals.
Q3. Explain the role of herbaria in classification.
Ans: Herbarium is a collection of dried and pressed plant specimens. It helps in identification and comparison of plant species.
Q4. Define biodiversity. Why is it important?
Ans: Biodiversity refers to the variety of living organisms. It is important for ecological balance, food, medicine, and ecosystem services.
Q5. Write any three objectives of classification.
Ans: To organize living organisms systematically.
To understand evolutionary relationships.
To make the study of organisms easier.
Q1. Explain the steps involved in the taxonomic hierarchy with suitable examples.
Ans: Taxonomic hierarchy includes the following levels:
Kingdom → Phylum/Division → Class → Order → Family → Genus → Species.
Example: Homo sapiens → Animalia, Chordata, Mammalia, Primates, Hominidae, Homo, sapiens.
Q2. What are the universal rules of binomial nomenclature? Give examples.
Ans: Names are in Latin.
Consist of two words – Genus (capitalized) + Species (lowercase).
Written in italics or underlined separately.
Example: Homo sapiens, Mangifera indica.
Q3. Describe the role of museums and zoological parks in the study of biodiversity.
Ans: Museums preserve dead animal specimens for study.
Zoological parks maintain live animals for education, conservation, and research.
Q1. Correct Answer: (a) Both A and R are true, R explains A.
Q2. Correct Answer: (a) Both A and R are true, R explains A.
The scientific name of man is Homo sapiens.
The taxonomic category between family and species is genus.
ICZN is related to naming of animals.
The term “taxonomy” was first coined by A.P. de Candolle.
Correct Answer: (d) Photosynthesis.
Q1. Diagram of taxonomic hierarchy (Kingdom → Phylum → Class → Order → Family → Genus → Species).
Q2. Flow chart: Identification → Nomenclature → Classification.
Q3. Classification of Homo sapiens:
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Species: sapiens
Q1. Some organisms show characteristics of two groups (e.g., Euglena shows both plant and animal features), so they are difficult to classify.
Q2. Taxonomists use morphological, anatomical, biochemical, and genetic traits to differentiate closely related species.
Q3. Classification is for convenience because it helps in systematic study and avoids confusion due to diversity.
Q4. Natural system: Based on evolutionary relationships.
Q5. Without binomial nomenclature, naming would vary by region and language, causing confusion in identifying organisms.
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Living beings are characterized by growth, reproduction, metabolism, response to stimuli, and cellular organization.
Carl Linnaeus is called the Father of Taxonomy because he developed the system of binomial nomenclature and classified organisms systematically
It is a system of naming organisms using two names: Genus (capitalized) and Species (small letters). Example: Homo sapiens.
A taxon is a group of organisms classified together at any rank such as species, genus, family, order, class, phylum, or kingdom.
Common names vary with language and region. Scientific names are universal and avoid confusion.
They are tools and techniques used to identify, classify, and preserve specimens. Examples: Herbarium, Botanical gardens, Zoological parks, Museums.
It is a collection of dried, pressed, and preserved plant specimens used for study and reference.
Classification helps in organizing diversity, understanding relationships, and studying evolution.
Names should be in Latin and italicized.
Genus starts with a capital letter, species with a small letter.
Each name must be unique and accepted internationally.