NCERT Solutions for Class 11 Biology Chapter 1, The Living World, cover the characteristics of living organisms, biodiversity, nomenclature, taxonomy, taxonomic categories, taxonomic hierarchy, and taxonomical aids such as herbaria, botanical gardens, museums, zoological parks, and keys.
According to NCERT Class 11 Biology Chapter 1, metabolism, cellular organisation, and consciousness are important characteristics of living organisms. Growth and reproduction are also observed in living organisms, but they are not considered defining characteristics in all cases.
Binomial nomenclature is the scientific system of naming organisms using two parts: the genus name and the specific epithet. According to NCERT, this system provides a standard way of naming organisms across different regions and languages.
Taxonomy deals with the identification, nomenclature, and classification of organisms. Systematics has a broader scope and also considers the evolutionary relationships and history of organisms while studying their diversity.
Taxonomical aids are resources used for the identification, study, and classification of organisms. NCERT Class 11 Biology Chapter 1 discusses herbaria, botanical gardens, museums, zoological parks, keys, flora, manuals, monographs, and catalogues as important taxonomical aids.
A herbarium contains preserved plant specimens arranged for study and reference. A botanical garden maintains living plant collections for study and reference. A museum contains preserved plant and animal specimens and other materials used for scientific study.
NCERT Solutions for Class 11 Biology Chapter 1 help students revise important topics such as nomenclature, taxonomic categories, taxonomic aids, and the basic principles of classification. These concepts are useful for CBSE board exams and provide a strong foundation for NEET preparation.
Yes, NCERT Solutions for Class 11 Biology Chapter 1 are based on the topics covered in the NCERT chapter, including taxonomy, systematics, taxonomic categories, binomial nomenclature, and taxonomic aids. They help students understand the concepts and answer NCERT exercise questions correctly.
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NCERT Solutions Class 11 Biology Chapter 1 - The Living World
NCERT Solutions for Class 11 Biology Chapter 1, The Living World, explain the basic characteristics of living organisms and introduce students to the classification of the diverse forms of life. The chapter covers important concepts such as Taxonomy, Systematics, Binomial Nomenclature, and Taxonomic Hierarchy.
NCERT Solutions for Class 11 Biology Chapter 1 by ALLEN provide clear explanations of the rules of Binomial Nomenclature and the different levels of the Taxonomic Hierarchy, from Kingdom to Species. Students can also understand the characteristics of living organisms, the difference between growth in living and non-living objects, and the role of taxonomical aids such as Herbaria, Botanical Gardens, Museums, and Keys. These concepts are important for understanding biological classification and answering questions based on NCERT Class 11 Biology Chapter 1.
1.0Class 11 Biology Chapter 1 The Living World: Key Concepts
Class 11 Biology Chapter 1, The Living World, introduces the basic features of living organisms and explains how scientists identify, name, and classify the wide variety of organisms found on Earth. The chapter covers the important concepts related to living organisms, biodiversity, nomenclature, taxonomy, and taxonomical aids.
The key concepts covered in this chapter include:
What is Living?: Understanding the main characteristics of living organisms, including growth, reproduction, metabolism, cellular organisation, and consciousness.
Diversity in the Living World: Learning about the variety of organisms and the importance of a standard system for identifying, naming, and classifying them.
Binomial Nomenclature: Understanding the scientific system of naming organisms introduced by Carolus Linnaeus, in which each organism is given a two-part scientific name consisting of the genus and specific epithet.
Taxonomic Categories: Studying the taxonomic hierarchy, which arranges organisms into different categories from Kingdom to Species.
Taxonomical Aids: Learning about the important resources used for identifying, studying, and classifying organisms, such as:
Herbarium: Collections of preserved plant specimens arranged for study and reference.
Botanical Gardens: Places where living plants are grown and maintained for study and reference.
Museums: Collections of preserved plant and animal specimens used for study.
Zoological Parks: Places where wild animals are kept in protected conditions for observation and study.
Keys: Tools used to identify organisms by comparing contrasting characteristics. A key is based on couplets, with each contrasting statement known as a lead.
Flora, Manuals, Monographs, and Catalogues: Sources that provide descriptions, information, and records of different groups of organisms.
2.0NCERT Solutions Class 11 Biology Chapter 1 - The Living World : Detailed Solutions
Why are living organisms classified?
Ans. Living organisms are classified to make their study easier and more systematic. Classification helps us identify organisms, understand their similarities and differences, and study their evolutionary relationships.
Why are the classification systems changing every now and then?
Ans. Classification systems change from time to time because new information about organisms becomes available. Advances in morphology, anatomy, cell biology, biochemistry, molecular biology and genetic studies provide new evidence about the relationships among organisms. Therefore, classification systems are modified accordingly.
What different criteria would you choose to classify people that you meet often?
Ans. People can be classified using criteria such as a meet often include behavior, geographical location, morphology, family members, relatives, friends etc.
What do we learn from identification of individuals and populations?
Ans. Identification of individuals and populations helps us know their characteristic features and relationships. It also helps in recognizing and distinguishing different organisms and populations from one another.
Given below is the scientific name of mango. Identify the correctly written name. Mangifera Indica Mangifera indica
Ans. The correctly written scientific name of mango is Mangifera indica.
Define a taxon. Give some example of taxa at different hierarchical levels.
Ans. A taxonomic unit in the biological system of classification of organism is called taxon (plural taxa).
For example a phylum, order, family, genus or species represents taxon. It represents a rank.
For example, all the insects form a taxon.
Taxon of class category for birds is Aves.
Taxonomic level. Example
Kingdom. Plantae
Phylum / Division Angiosperm
Class Dicotyledonae
Order. Rosales
Family Rosaceae
Genus Mangifera
Species Mangifera indica
Can you identify the correct sequence of taxonomical categories?
(a) Species → Order → Phylum → Kingdom
(b) Genus → Species → Order Kingdom
(c) Species → Genus → Order → Phylum
Ans. The correct sequence of taxonomical categories is
(c) Species → Genus → Order → Phylum.
Try to collect all the currently accepted meanings for the word 'species'. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand, and bacteria on the other hand.
Ans. The term species has different meanings depending upon the group of organisms being considered.
In general, a species is a group of organisms having fundamental similarities and capable of reproducing under natural conditions.
In higher plants and animals, species is commonly considered as a group of similar organisms that can interbreed and produce fertile offspring.
In bacteria, the concept of species is more difficult because bacteria reproduce mainly by asexual methods. Therefore, morphological, biochemical, genetic and molecular characteristics are also considered for identifying bacterial species.
Define and understand the following terms:
(i) Phylum
(ii) Class
(iii) Family
(iv) Order
(v) Genus
Ans.Phylum : Phylum is a taxonomic category consisting of related classes. In plants, the term Division is generally used instead of phylum.
Example : Chordata is a phylum.
Class : Class is a taxonomic category that includes related orders.
Example : Mammalia is a class.
Family : Family is a taxonomic category that includes one or more related genera. Families are characterised on the basis of certain similarities among their genera.
Example : Solanaceae is a family.
Order : Order is a taxonomic category that includes one or more related families.
Example : Primates is an order.
Genus : Genus comprises a group of related species that have more characteristics in common compared to species of other genera. Example : Solanum is a genus that includes species such as Solanum tuberosum and Solanum nigrum.
Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
Ans. A. Plant Example - Mango
Scientific name : Mangifera indica
Category
Mango
Kingdom
Plantae
Division
Angiospermae
Class
Dicotyledonae
Order
Sapindales
Family
Anacardiaceae
Genus
Mangifera
Species
Mangifera indica
B. Animal Example - Human
Scientific name : Homo sapiens
Category
Human
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Primates
Family
Hominidae
Genus
Homo
Species
Homo sapiens
3.0NCERT Class 11 Biology – Chapter-Wise Solutions & Explanations
Explore chapter-wise NCERT Solutions for Class 11 Biology with clear and detailed explanations for every textbook question. Understand important concepts, revise chapter topics, and strengthen your Biology fundamentals for better exam preparation.
4.0Key Features of NCERT Solutions for Class 11 Biology Chapter 1
Defining and Non-Defining Characteristics: The solutions explain why consciousness is considered a defining characteristic of living organisms, while growth is not considered a defining property. This helps students understand commonly asked conceptual questions.
Rules of Biological Nomenclature: Students can learn the important rules of biological nomenclature, including the use of Latin names, italics, and proper capitalisation. The explanations make it easier to understand how scientific names are written correctly.
Taxonomic Hierarchy: The solutions explain the order of taxonomic categories from Kingdom to Species. They also help students understand that organisms placed in lower taxonomic categories have more characteristics in common.
Taxonomical Aids: Clear explanations are provided for different taxonomical aids, including herbarium, botanical gardens, museums, zoological parks, keys, flora, manuals, monographs, and catalogues. Students can easily understand the purpose and differences between these resources.
Prepared by Subject Experts: These NCERT Solutions are prepared by ALLEN subject experts to provide accurate explanations based on the NCERT Class 11 Biology syllabus and help students understand the chapter more effectively.