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The Living World

The Living World

Edited By Team Careers360 | Updated on May 07, 2022 02:06 PM IST

Introduction|
Plants and animals of various species make up the living world. Cells are the structural and functional units of life, and they are the building blocks of the living world. To carry out growth and reproductive activities, they have the ability to change their appearance and structure with the help of carbon-based and similar compounds (during metabolism). Natural selection and hereditary validation have evolved modern life forms from primitive life forms over generations. With some fossils dating back 3.5 to 3.7 billion years, it's possible that studies claiming life began on this planet as early as 4.1 billion years ago aren't entirely accurate.

The world of living organisms

A system of standardizing names was implemented in response to the enormous number of organisms discovered to date. An organism is given a two-part scientific name in binomial nomenclature. When botanists and zoologists assign a scientific name to an organism, they follow a set of rules and criteria. Plant names, for example, are assigned using the International Code for Botanical Nomenclature's principles and criteria (ICBN). Animal names are also assigned according to the International Code of Zoological Nomenclature (ICZN). A hierarchy of steps was used to classify organisms according to the aforementioned conventions, with each step representing a category or a rank. Species are the most fundamental unit of classification. A species is a group of organisms that share fundamental characteristics.

The living world ncert

The CBSE board is the central board that directs the administration of board exams for students in grades 10 and 12. These exams are held in the months of March and April. The Central Board of Secondary Education (CBSE) is one of India's oldest and most prestigious educational boards. The CBSE Board syllabus is primarily based on NCERT textbooks, as they set question papers using NCERT textbooks as a guide. As a result, every competitive exam uses NCERT to create its question papers.

Class 11 Biology Chapter 1 Notes vividly explain the various aspects of naming and classification of the living world. This study material will teach you about various world habitats such as cold mountains, deciduous forests, oceans, freshwater lakes, deserts, and hot springs, among others. The differences between living and nonliving organisms are also discussed in the Biology Class 11 Chapter 1 Notes. It is unquestionably one of the most dependable study aids available for laying the groundwork for Class 11 biology.

The earth and its living world

We find land in some places and water in others on the earth's surface. The atmosphere encircles the planet. On land, in the water, and in the air, there are living things. Many natural processes on Earth are triggered by the sun. The hydrosphere, lithosphere, and atmosphere, respectively, are the earth's envelopes of water, land, and air. All three spheres are affected by the biosphere.

The world of living

Simply put, the living world is the world that surrounds us. It includes all non-visible living creatures, plants, and microorganisms. Its composition has changed over billions of years, but the overall structure has remained the same. Organic and inorganic matter are still the most important components. Amino acids, proteins, lipids, and other organic matter are examples of organic matter, whereas water and minerals are examples of inorganic matter.

The living world ppt

When we consider it, the world is a fascinating place with a diverse range of living organisms. Furthermore, there are extraordinary habitats, such as mountains, forests, oceans, lakes, and deserts, in which living organisms seek refuge. However, everything in the world can make us wonder what life is all about.

Notably, this is a difficult question to answer because it has many facets, both scientific and philosophical. However, in class 11, students will focus on specific aspects of it and will primarily reflect on – what it means to be alive as well as the diversity of the living world. They will also be taught about taxonomic categories, order, and taxonomic classification.

NCERT Solutions Subject wise link:

NCERT Exemplar Solutions Subject wise link:

The world of the living

These lessons follow the major themes of Unit 1: The Living World Around Us, beginning with investigations into the diversity of animals and plants, as well as the nonliving components of local habitats, as well as the effect of human activity on wildlife. Unit 2: Animal Function introduces the classification, or grouping, of animals, as well as the ways in which adaptation aids their function in their environment.

Ncert the living world

Class 11 Biology Chapter 1 - The Living World is now available online.

Life is a one-of-a-kind process involving the aggregation of molecules. To perform their specific functions, these molecules go through a series of chemical reactions known as metabolism. Energy is produced and used as a result of this process. Through the production of various biomolecules, metabolism will result in the growth, development, reproduction, adaptations, and other functions of living organisms. All living organisms found in various habitats, whether terrestrial or aquatic, in mountains, deserts, oceans, forests, and so on, share a genetic material that is somewhat similar.

The living world of plants

In our garden, we have a variety of plants, including a few small, tiny, short, large trees with colourful flowers and fruits. There are various types of plants, each of which is classified into its own category. Let's take a closer look at plants, their parts, and the various types of plants.

NCERT Notes Subject Wise Link:

Frequently Asked Question (FAQs)

1. Why are living organisms classified?

The world is home to millions of organisms, and we may recognise nearby plants and animals by their native names. These regional names differ from one country to the next. This makes it difficult to identify and research certain species. As a result, it must be referred to by its common name throughout the world in order to standardise organism nomenclature and research. Organisms are named and grouped according to their functions to accomplish this.

2. Why do classification systems change from time to time?

Scientific research is always evolving, and new species and organisms are frequently added. The first classification system was based only on species' habits and habitats. External morphology gradually becomes a criterion for classification. The morphology and embryology of the organism are then considered, followed by the phylogenetic relationship and the organism's cytology. Biochemical approaches are now used to classify organisms based on their nucleic acid components.

3. What distinct characteristics would you use to categorise folks you meet frequently?

Gender, skin colour, education, career, hobbies, and nature are all used to categorise the people we meet on a regular basis.

4. What can we learn about people and populations from their identification?

We can learn the following things by recognising individuals and populations.

  • Gender 

  • Gender 

  • Location of origin

  • food habit 

  • food habit 

  • Religion

  • caste

5. What role does a key play in identifying and classifying organisms?

A key is a taxonomic tool that helps identify plants and animals by comparing and contrasting their characteristics. It indicates a choice between two characters that are diametrically opposed. This is useful for distinguishing between characters. They're two opposing characters, and when the species, family, or genus are identified, one character's choice rejects the other.


If the entity hasn't been named yet, efforts are made to conduct a preliminary investigation and review its discovery before naming it. As a result, each entity can be categorised as known or unknown.

6. What is Taxonomy?

Taxonomy is a branch of biology concerned with the identification, description, and categorization of all living species, including plants. Behavioural, genetic, and biochemical differences are used to classify people. Taxonomy involves the processes of characterization, identification, and classification. Kingdom, phylum, class, order, family, genus, and species are all terms used to classify organisms.

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