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BIOLOGICAL 
CLASSIFICATION
Page 2


BIOLOGICAL 
CLASSIFICATION
INTRODUCTION
The process of grouping organisms based on
similarities, differences, and evolutionary relationships
 HISTORICAL CLASSIFICATION SYSTEMS:
Aristotle's classification of plants and animals.
Linnaeus' Two Kingdom system - Plantae and
Animalia.
R.H. Whittaker's Five Kingdom system - Monera,
Protista, Fungi, Plantae, Animalia.
Page 3


BIOLOGICAL 
CLASSIFICATION
INTRODUCTION
The process of grouping organisms based on
similarities, differences, and evolutionary relationships
 HISTORICAL CLASSIFICATION SYSTEMS:
Aristotle's classification of plants and animals.
Linnaeus' Two Kingdom system - Plantae and
Animalia.
R.H. Whittaker's Five Kingdom system - Monera,
Protista, Fungi, Plantae, Animalia.
FIVE  KINGDOM
CLASSIFICATION
R.H. WHITTAKER:
Introduced the Five Kingdom system.
FIVE KINGDOMS:
Monera, Protista, Fungi, Plantae, Animalia.
BASIS OF CLASSIFICATION:
Cellular structure, complexity, mode of
nutrition,phylogenetic relationship, ecological role.
Page 4


BIOLOGICAL 
CLASSIFICATION
INTRODUCTION
The process of grouping organisms based on
similarities, differences, and evolutionary relationships
 HISTORICAL CLASSIFICATION SYSTEMS:
Aristotle's classification of plants and animals.
Linnaeus' Two Kingdom system - Plantae and
Animalia.
R.H. Whittaker's Five Kingdom system - Monera,
Protista, Fungi, Plantae, Animalia.
FIVE  KINGDOM
CLASSIFICATION
R.H. WHITTAKER:
Introduced the Five Kingdom system.
FIVE KINGDOMS:
Monera, Protista, Fungi, Plantae, Animalia.
BASIS OF CLASSIFICATION:
Cellular structure, complexity, mode of
nutrition,phylogenetic relationship, ecological role.
Page 5


BIOLOGICAL 
CLASSIFICATION
INTRODUCTION
The process of grouping organisms based on
similarities, differences, and evolutionary relationships
 HISTORICAL CLASSIFICATION SYSTEMS:
Aristotle's classification of plants and animals.
Linnaeus' Two Kingdom system - Plantae and
Animalia.
R.H. Whittaker's Five Kingdom system - Monera,
Protista, Fungi, Plantae, Animalia.
FIVE  KINGDOM
CLASSIFICATION
R.H. WHITTAKER:
Introduced the Five Kingdom system.
FIVE KINGDOMS:
Monera, Protista, Fungi, Plantae, Animalia.
BASIS OF CLASSIFICATION:
Cellular structure, complexity, mode of
nutrition,phylogenetic relationship, ecological role.
Characteristics of the Five Kingdoms
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FAQs on PPT: Important Concepts: Biological Classification - Biology Class 11 - NEET

1. What is biological classification?
Ans. Biological classification is the process of categorizing and organizing living organisms based on their shared characteristics and evolutionary relationships.
2. Why is biological classification important?
Ans. Biological classification helps scientists understand the diversity of life on Earth, identify and name new species, study evolutionary relationships, and predict the characteristics of unknown organisms.
3. What are the different levels of biological classification?
Ans. The different levels of biological classification, from broadest to most specific, are domain, kingdom, phylum, class, order, family, genus, and species.
4. How is biological classification different from taxonomy?
Ans. Taxonomy is a specific branch of biological classification that focuses on naming and categorizing organisms. Biological classification, on the other hand, includes the broader process of organizing and categorizing living organisms.
5. How do scientists determine the classification of a new species?
Ans. Scientists use a variety of characteristics, such as physical appearance, genetic analysis, behavior, and habitat, to determine the classification of a new species. They compare these characteristics to known species to assign the new species to the appropriate taxonomic group.
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