The living world is considered an important chapter for NEET. This chapter exposes you to the core principles of the universe of living beings; you must become acquainted with it. Additionally, having a good understanding of the topics taught in the chapter allows one to advance to far bigger concepts easily. Also, because this chapter is rather long, there's a good risk you'll miss several important points. However, by referring to these biological notes of the living world for NEET, one may swiftly reduce the stated risk. These notes will help you in your last-minute revision.
Living things are made up of cells that can perform various cellular functions. Anything capable of growth, development, response, adaptability, and reproduction is considered living. These distinguishing traits help biology in determining whether or not something is alive.
Features of Living Organisms:
The following are the features of living organisms:
For your better understanding of the characteristics of living organisms, the following flow chart is shown:
There are two forms of growth:
There are two forms of intrinsic growth:
There are two modes of reproduction:
Regeneration is a process in which only damaged body parts are healed or regenerated.
Sexual reproduction is the process of forming gametes through meiosis and fertilizing them to produce children.
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Metabolism is the total of all chemical reactions that occur in our bodies. Metabolism is present in all organisms, including unicellular and multicellular. There are no non-living objects that display metabolic activity.
The cell is life's fundamental unit. All creatures are made up of cells; some are made up of a single cell and are called unicellular organisms; others are made up of numerous cells and are referred to as multicellular organisms. Unicellular organisms are capable of autonomous existence and executing vital biological functions. Anything less than a cell structure does not guarantee autonomous life. All living organisms are made up of cells, the basic structural and functional units. This is life's distinguishing characteristic.
An organism can respond to external stimuli or changes in the environment. It is a characteristic of all living things. They can detect any changes in their surroundings.
If you are preparing for the NEET examination, you must have the living world NEET notes for your last minute revision. This will help you to boost your preparation.
There are millions of plants and creatures in the living world. Biodiversity refers to the great variety of them and other living beings. The procedure of nomenclature is used to give each creature a scientific name. The names are widely accepted to minimize mistakes while referring to a species. Humans, for example, are known scientifically as Homo sapiens. The International Code for Botanical Nomenclature lays forth the agreed-upon principles for plants and creatures (ICBN). The International Code for Zoological Nomenclature, on the other hand, lays forth the agreed-upon principles for naming animals (ICZN).
The following are the specific terms based on which the bio diversities are classified:
The classification process follows different steps that constitute a rank or category and are taxonomic categories. A taxonomic hierarchy is made up of these taxonomic groupings. Here are some key points to help you comprehend the hierarchy:
Species: A species is formed when organisms are grouped based on fundamental similarities.
Genus is a group of closely related species. Potato and brinjal, for example, belong to the same Solanum genus but are separate species. When comparing two genera, there are greater similarities than when comparing two species.
Family refers to a collection of closely related genera. Plant species' vegetative and reproductive characteristics are used to classify them into families. A family, in comparison to genera and species, has fewer similarities.
Order is a higher classification level than species, genera, and families. The aggregate of families is called order, indicating a lower amount of comparable characters.
Class is a group of orders that are connected.
Phylum/Division: Phylum is used in the case of animals, and Division is used in the case of plants to group together related groups.
Kingdom: the greatest level of the taxonomic system. This categorization is based on Taxon, which is observable characteristics.
Classification and identification are essential for the complete and accurate study of organisms. Biologists, researchers, and scientists will need to do laboratory and field research for this. Herbarium, museums, botanical gardens, and zoological parks are some frequent taxonomic aids.
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