NCERT Solutions for Class 11 Biology Chapter 1 - The Living World here: Students can find detailed answers to all the Exercise Questions in the NCERT Class 11 Textbook Biology by consulting NCERT Solutions for Class 11 Biology. The most recent CBSE Syllabus revision is in line with it. A careful plan, supported by thorough and in-depth concept learning, is your best bet for acing the board exams. This is why students can rely on NCERT Solutions for Class 11 (PCMB).
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How wonderful is The Living World Class 11 chapter of NCERT Solutions for Class 11 Biology. The wide range of living types is amazing. Solutions for NCERT Class 11 Biology Chapter 1 - The Living World contain amazing explanations of all the questions that are based on the diversity of living organisms. In this Class 11th Biology Chapter 1, you will learn that early man could easily perceive the difference between inanimate matter and living organisms. A common feature of all such forms of inanimate and animate objects was the sense of awe or fear that they evoked. Such facts will be studied in Biology Class 11 Chapter 1, and you can easily find NCERT Class 11 Biology Chapter 1 Exercise solutions. If you need an answer from any other chapter of any other class (from NCERT), then go through NCERT Solutions, there you will get all the answers easily.
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After going through Biology Class 11 Chapter 1 thoroughly, you must be able to answer these questions, which are given below:
The Class 11 Biology Chapter 1 Question Answers are explained in detail for better understanding.
Q1. Why are living organisms classified?
Answer:
Living organisms are classified because of the following reasons
1. Due to a large variety of life forms on earth, it becomes difficult to study each of the species, thus scientists classify these species into larger groups, wherein by studying a group, we can deduce the characteristics of all the species. Hence living organisms are classified for the ease of studying them.
2. Classifying organisms into groups and sub-groups may also aid in establishing evolutionary relationships between them.
Q2. Why are the classification systems changing every now and then?
Answer:
Earth is a home for numerous species of plants, animals and microbes. The exact count of these life forms is still unknown. Scientists have discovered many species present on Earth. These have been properly named and classified as per the existing classification systems. However, there are still so many species to be discovered. Whenever new species are discovered the classification systems are modified according to the requirements. Therefore, the classification systems are always dynamic and they keep on changing as per the needs.
Q3. What different criteria would you choose to classify people that you meet often?
Answer:
The people that we often meet can be classified on the basis of their sex or gender, the age group in which they fall, profession, education, hobbies etc.
Q4. What do we learn from identification of individuals and populations?
Answer:
The identification of individuals based on their characteristics helps us to know how an individual differs from the other members of the population and in what points it is similar to the population. It also helps us deduce relationships between individuals of different population. Such relationships help in classifying organisms in their right groups. Learning the characteristics of populations aid in the study of that population as well as how it can be related to the other populations. Through this practice, e can establish evolutionary relationships between different populations.
The Living World Class 11 Questions and Answers
Q5. Given below is the scientific name of Mango. Identify the correctly written name.
Answer:
The correct scientific name of mango is Mangifera indica. As per the binomial system of nomenclature, the first name in a scientific name is the genus name while the second name is specific. The scientific name is always written in italics. The first letter of the genus name is written in capitals while that of the specific name is written in small letters.
Answer:
Taxon refers to a particular level of hierarchy in the classification of living beings. The examples of taxa at different hierarchical levels are species, genus, order, family, phylum and kingdom.
Q7. Can you identify the correct sequence of taxonomical categories:
(A) Species Order Phylum Kingdom
(B) Genus Species Order Kingdom
(C) Species Genus Order Phylum
Answer:
The correct sequence of taxonomic categories from lowest to highest is species, genus, family, order, class, phylum, kingdom. Thus, A and C represents the correct sequence of taxonomic categories with some categories missing in between while B is incorrect as the genus is given before species.
Answer:
Species can be defined in various ways such as
1. Species refers to a group of individuals similar in their fundamental characteristics and can interbreed among themselves.
2. Species is the basic unit of classification which assembles individuals which share common genetic set-up.
3. Species refers to a natural group of individuals similar in morphology, physiology, anatomy, cytology etc.
Since, higher plants and animals show sexual reproduction extensively, in their case first definition of species is applicable i.e. species refers to a group of individuals similar in their fundamental characteristics and can interbreed among themselves. On the other hand, in case of bacteria, the second and third definitions are applicable.
Class 11 Biology Chapter 1 Exercise Solutions
Q9. Define and understand the following terms:
(i) Phylum
Answer:
Phylum- A phylum is a large group of animals. which is formed of one or more classes. The term phylum is replaced by division in case of plants. For example, the phylum chordate of animals contains mammals, aves, reptiles, amphibians, etc.
(ii) Class
Answer:
Class- It is a taxonomic group higher than order and lower to phylum. A class is made of one or more related orders. For example, the class dicotyledoneae of flowering plants contain all dicots which are grouped into several orders like Rosales, Polemoniales etc.
Q9. Define and understand the following terms:
(iii) Family
Answer:
Family refers to that taxonomic category which contains one or more related genera. For example, family Solanaceae contains a number of genera like Solanum, Withania, Datura etc. All genera of a family related through some common features or correlated characters.
Q9. Define and understand the following terms:
(iv) Order
Answer:
Order is the taxonomic category higher to family and lower to class. An order consists of one or more groups of families which share certain common characteristics. For example, families felidae and canidae are included in same order carnivore.
Q9. Define and understand the following terms:
(v) Genus
Answer:
Genus- A genus is a group of related species which resemble one another in certain correlated characters. All species of genus presumed to have evolved from a common ancestor. Lion, Tiger, Leopard are closely related species and placed in same genus Panther.
Q10. How is a key helpful in the identification and classification of an organism?
Answer:
A taxonomic key refers to an artificial analytical device used for identifying organisms. Usually, in a key, two contrasting characters are used. The one present in the organism is chosen while other is rejected. Each statement of a key is called a lead. Separate taxonomic keys are used for each taxonomic category like species, genus, family, etc. Keys are generally analytical in nature.
Q11. Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
Answer:
Taxonomical hierarchy refers to the classification of organisms into a definite sequence of taxonomic categories starting from the kingdom and going up to species. The illustration of the taxonomic hierarchy is given below.
Taxonomic categories | Animals- human | Plant- rose |
Kingdom | Animalia | Plantae |
Phylum/Division | Chordata | Angiospermae |
Class | Mammalia | Dicotyledonae |
Order | Primata | Rosales |
Family | Hominidae | Rosaceae |
Genus | Homo | Rosa |
Species | sapiens | indica |
Topics and Subtopics in NCERT Solutions for Class 11 Biology Chapter 1 The Living World:
1.1 What is ‘Living’?
1.2 Diversity in the Living World
1.3 Taxonomic Categories
1.3.1 Species
1.3.2 Genus
1.3.3 Family
1.3.4 Order
1.3.5 Class
1.3.6 Phylum
1.3.7 Kingdom
1.4 Taxonomical Aids
1.4.1 Herbarium
1.4.2 Botanical Gardens
1.4.3 Museum
1.4.4 Zoological Parks
1.4.5 Key
Class 11 Biology Chapter 1 NCERT Solutions highlights are given below:
Chapter 1 | The Living World |
Chapter 2 | Biological Classification |
Chapter 3 | Plant Kingdom |
Chapter 4 | Animal Kingdom |
Chapter 5 | Morphology of Flowering Plants |
Chapter 6 | Anatomy of Flowering Plants |
Chapter 7 | Structural Organisation in Animals |
Chapter 8 | Cell: The Unit of Life |
Chapter 9 | Biomolecules |
Chapter 10 | Cell Cycle and Cell Division |
Chapter 11 | Transport in Plants |
Chapter 12 | Mineral Nutrition |
Chapter 13 | Photosynthesis in Higher Plants |
Chapter 14 | Respiration in Plants |
Chapter 15 | Plant Growth and Development |
Chapter 16 | Digestion and Absorption |
Chapter 17 | Breathing and Exchange of Gases |
Chapter 18 | Body Fluids and Circulation |
Chapter 19 | Excretory Products and Their Elimination |
Chapter 20 | Locomotion and Movement |
Chapter 21 | Neural Control and Coordination |
Chapter 22 | Chemical Coordination and Integration |
In preparation for exams like the JEE Main and NEET, consider the following related studies.
Class 11th Biology Chapter 1: In, biology class 11 chapter 1, you will study taxonomy which is the branch of knowledge dealing with various species of plants and animals that are useful in agriculture, forestry, industry and in general for knowing our bio-resources and their diversity. These taxonomic studies related questions are mentioned at the end of this chapter the living world class 11 and to get class 11 biology NCERT solutions for this chapter, check NCERT solutions for living world class 11. The Living World Class 11 Questions and Answers are prepared by the experienced subject experts.
Try to attempt all the questions given in the biology class 11 chapter 1. Because of this you will make your base stronger, as Class 11 Biology NCERT Solutions will not only help you in the preparations of the 12th board exam as well as also for other entrance exams like NEET.
A taxonomic key refers to an artificial analytical device used for identifying organisms. Usually, in a key, two contrasting characters are used. The one present in the organism is chosen while other is rejected. Each statement of a key is called a lead. Separate taxonomic keys are used for each taxonomic category like species, genus, family.
The important topics of biology class 11 chapter 1 are:
In order to answer textbook questions correctly, students should consult the NCERT Solutions for Class 11 Biology Chapter 1. The interactive way in which the solutions are created by the experts allows students to better understand the key ideas. Students will be able to analyze the kinds of questions that would be asked in Class 11 exams through regular practice. The answers assist students in finishing the CBSE syllabus on time and concentrating on revision a few months before the board exam.
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