Diversity in Living Organisms — Important Questions
47 questions
With answersCBSE format
SUMMARY: The chapter "Diversity in Living Organisms" explores the classification of living organisms into different groups based on their characteristics and evolutionary relationships. KEY TOPICS: Biological classification, Five Kingdom classification, Plantae, Animalia, Monera, Protista, Fungi, Binomial nomenclature, Hierarchical classification, Evolutionary relationships.
Which of the following is NOT one of the five kingdoms of classification?
AMonera
BPlantae
CAnimalia
DBacteria
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Correct answer: Option 4 — Bacteria
Q21 Mark
What is the primary basis for the classification of living organisms?
AColor
BSize
CCharacteristics and evolutionary relationships
DHabitat
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Correct answer: Option 3 — Characteristics and evolutionary relationships
Q31 Mark
Which kingdom includes multicellular organisms that are autotrophic?
AFungi
BAnimalia
CPlantae
DMonera
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Correct answer: Option 3 — Plantae
Q41 Mark
What is the correct format for binomial nomenclature?
AGenus species
BSpecies Genus
CGenus-species
DSpecies-Genus
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Correct answer: Option 1 — Genus species
Q51 Mark
Which kingdom is characterized by organisms that are primarily unicellular and prokaryotic?
AFungi
BAnimalia
CMonera
DProtista
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Correct answer: Option 3 — Monera
Q61 Mark
In the hierarchical classification system, which rank comes immediately after 'Phylum'?
AClass
BOrder
CFamily
DGenus
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Correct answer: Option 1 — Class
Q71 Mark
Which of the following organisms belongs to the kingdom Fungi?
AMushrooms
BEagles
CAlgae
DBacteria
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Correct answer: Option 1 — Mushrooms
Q81 Mark
What is the main role of the kingdom Protista in the ecosystem?
ADecomposers
BProducers
CConsumers
DAll of the above
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Correct answer: Option 4 — All of the above
Q91 Mark
Which of the following statements about the kingdom Animalia is true?
AAll are autotrophic.
BAll are multicellular and heterotrophic.
CAll are unicellular.
DAll can perform photosynthesis.
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Correct answer: Option 2 — All are multicellular and heterotrophic.
Q101 Mark
Which of the following is a characteristic feature of organisms in the kingdom Monera?
AEukaryotic cells
BCell walls made of cellulose
CProkaryotic cells
DMulticellular structure
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Correct answer: Option 3 — Prokaryotic cells
Q111 Mark
What is the significance of binomial nomenclature in biological classification?
AIt helps in the classification of plants only.
BIt provides a universal naming system for organisms.
CIt is only used for animals.
DIt is based on the color of organisms.
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Correct answer: Option 2 — It provides a universal naming system for organisms.
Q121 Mark
Which of the following best describes the kingdom Fungi?
APhotosynthetic organisms
BOrganisms that absorb nutrients from their environment
COrganisms that can move independently
DUnicellular organisms only
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Correct answer: Option 2 — Organisms that absorb nutrients from their environment
Q131 Mark
In the classification hierarchy, which category is more specific than 'Order'?
AClass
BFamily
CPhylum
DKingdom
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Correct answer: Option 2 — Family
Q141 Mark
Which of the following is a characteristic of organisms in the kingdom Plantae?
AHeterotrophic
BPhotosynthetic
CUnicellular
DProkaryotic
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Correct answer: Option 2 — Photosynthetic
Q151 Mark
Which of the following pairs correctly matches a kingdom with its characteristic?
AMonera - Multicellular organisms
BFungi - Eukaryotic and heterotrophic
CAnimalia - Prokaryotic organisms
DPlantae - Unicellular and autotrophic
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Correct answer: Option 2 — Fungi - Eukaryotic and heterotrophic
Short Answer Questions10 questions
Q163 Marks
What is biological classification and why is it important in the study of living organisms?
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Biological classification is the systematic grouping of living organisms based on shared characteristics and evolutionary relationships. It is important because it helps scientists organize and identify species, understand their relationships, and communicate about them effectively.
Q173 Marks
Explain the Five Kingdom classification system and name the five kingdoms.
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The Five Kingdom classification system categorizes living organisms into five groups: Monera (bacteria), Protista (simple eukaryotes), Fungi (fungi), Plantae (plants), and Animalia (animals). This system reflects the evolutionary relationships and characteristics of these organisms.
Q183 Marks
What are the main characteristics that differentiate the kingdom Monera from other kingdoms?
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The kingdom Monera consists of prokaryotic organisms, which lack a true nucleus and membrane-bound organelles. They are unicellular and can be autotrophic or heterotrophic, distinguishing them from the eukaryotic organisms in other kingdoms.
Q193 Marks
Describe the role of fungi in the ecosystem.
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Fungi play a crucial role in ecosystems as decomposers, breaking down dead organic matter and recycling nutrients back into the soil. They also form symbiotic relationships with plants (mycorrhizae) and can be sources of food and medicine for humans.
Q203 Marks
What is binomial nomenclature and why is it significant?
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Binomial nomenclature is a system of naming organisms using two terms: the genus name and the species name. It is significant because it provides a universal naming system that avoids confusion and allows scientists to communicate clearly about species.
Q213 Marks
How does hierarchical classification work? Provide an example.
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Hierarchical classification organizes living organisms into a ranked structure, starting from broad categories to specific ones. For example, the classification of humans is: Domain (Eukarya) > Kingdom (Animalia) > Phylum (Chordata) > Class (Mammalia) > Order (Primates) > Family (Hominidae) > Genus (Homo) > Species (Homo sapiens).
Q223 Marks
What are the distinguishing features of the kingdom Plantae?
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The kingdom Plantae consists of multicellular, eukaryotic organisms that are primarily autotrophic, using photosynthesis to produce their own food. They have cell walls made of cellulose and are characterized by their ability to reproduce sexually and asexually.
Q233 Marks
Explain the significance of evolutionary relationships in biological classification.
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Evolutionary relationships are significant in biological classification as they reflect the common ancestry and divergence of species over time. Understanding these relationships helps scientists trace the evolution of traits and predict characteristics of organisms based on their lineage.
Q243 Marks
What are the main differences between the kingdoms Animalia and Plantae?
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The main differences between Animalia and Plantae include their modes of nutrition (animals are heterotrophic, while plants are autotrophic), cellular structure (animals lack cell walls, whereas plants have cell walls made of cellulose), and their reproductive strategies (animals often reproduce sexually, while plants can reproduce both sexually and asexually).
Q253 Marks
Discuss the characteristics of the kingdom Protista and provide examples.
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The kingdom Protista includes diverse organisms that are primarily unicellular or simple multicellular eukaryotes. They can be autotrophic (like algae) or heterotrophic (like protozoa). Examples include Amoeba, Paramecium, and various types of algae.
Long Answer Questions6 questions
Q266 Marks
Explain the Five Kingdom classification system and its significance in understanding the diversity of life forms.
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The Five Kingdom classification system, proposed by Robert Whittaker, categorizes living organisms into five distinct kingdoms: Monera, Protista, Fungi, Plantae, and Animalia. This system is significant as it provides a framework for understanding the vast diversity of life on Earth by grouping organisms based on shared characteristics and evolutionary relationships. Monera includes prokaryotic organisms like bacteria, while Protista encompasses unicellular eukaryotes. Fungi are characterized by their chitinous cell walls and heterotrophic mode of nutrition, Plantae includes multicellular autotrophs that perform photosynthesis, and Animalia consists of multicellular, heterotrophic organisms. This classification helps in studying the evolutionary lineage and ecological roles of different organisms, facilitating better understanding and research in biology.
Q276 Marks
Describe the characteristics that distinguish the kingdom Fungi from other kingdoms in the Five Kingdom classification.
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The kingdom Fungi is distinguished from other kingdoms by several unique characteristics. Fungi are primarily heterotrophic organisms that obtain their nutrients through absorption, breaking down organic matter externally before absorbing it. They possess cell walls made of chitin, unlike plants which have cellulose in their cell walls. Fungi reproduce through spores, which can be produced sexually or asexually, and they often form symbiotic relationships with other organisms, such as mycorrhizae with plants. Additionally, fungi play a crucial role in ecosystems as decomposers, recycling nutrients back into the environment. These characteristics highlight the ecological importance and distinct biological features of fungi compared to other kingdoms.
Q286 Marks
What is binomial nomenclature, and why is it important in biological classification? Provide an example.
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Binomial nomenclature is a formal system of naming species in which each species is given a two-part Latin name. The first part is the genus name, and the second part is the species identifier. This system was developed by Carl Linnaeus and is important because it provides a standardized method for naming organisms, reducing confusion caused by common names that can vary by region and language. For example, the scientific name for the domestic cat is Felis catus, where 'Felis' represents the genus and 'catus' specifies the species. This universal naming system facilitates clear communication among scientists and helps in organizing biological information systematically.
Q296 Marks
Discuss the hierarchical classification system and its levels in the context of biological classification.
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The hierarchical classification system organizes living organisms into a ranked structure that reflects their evolutionary relationships and shared characteristics. The main levels of this hierarchy, from broadest to most specific, are Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. Each level represents a rank in the classification, with organisms grouped together based on increasingly specific traits. For instance, humans belong to the domain Eukarya, kingdom Animalia, phylum Chordata, class Mammalia, order Primates, family Hominidae, genus Homo, and species Homo sapiens. This system allows scientists to classify and study organisms systematically, making it easier to understand their relationships and evolutionary history.
Q306 Marks
Compare and contrast the characteristics of the kingdoms Plantae and Animalia in the Five Kingdom classification.
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The kingdoms Plantae and Animalia exhibit several contrasting characteristics that define their respective groups. Plantae, or plants, are primarily autotrophic organisms that perform photosynthesis using chlorophyll, which allows them to convert sunlight into energy. They have cell walls made of cellulose and are generally stationary. In contrast, Animalia, or animals, are heterotrophic and rely on consuming other organisms for energy. They lack cell walls and are typically motile at some stage of their life cycle. Additionally, plants have a rigid structure that supports their growth, while animals possess complex organ systems for movement and response to stimuli. These differences highlight the distinct biological and ecological roles that plants and animals play in their environments.
Q316 Marks
Explain the significance of evolutionary relationships in biological classification and provide an example of how these relationships are determined.
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Evolutionary relationships in biological classification are significant as they provide insights into how different species are related through common ancestry. These relationships are determined using various methods, including morphological comparisons, genetic analysis, and fossil records. For example, the classification of mammals is based on shared characteristics such as hair, mammary glands, and three middle ear bones, which indicate a common evolutionary ancestor. By studying DNA sequences, scientists can also construct phylogenetic trees that illustrate the evolutionary pathways and relationships among species. Understanding these relationships helps in the study of biodiversity and the evolutionary processes that shape life on Earth.
Assertion–Reason Questions8 questions
Q321 Mark
Assertion (A): The Five Kingdom classification includes Monera, Protista, Fungi, Plantae, and Animalia.
Reason (R): This classification system is based on the cellular organization and nutritional modes of organisms.
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Correct answer: Option 1 —
Both A and R are true, and R is the correct explanation of A.
Q331 Mark
Assertion (A): Binomial nomenclature is a system used for naming organisms.
Reason (R): It assigns a unique two-part name to each species, consisting of the genus and species names.
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Correct answer: Option 1 —
Both A and R are true, and R is the correct explanation of A.
Q341 Mark
Assertion (A): All members of the kingdom Fungi are autotrophic.
Reason (R): Fungi obtain their nutrients through absorption from organic matter.
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Correct answer: Option 4 —
A is false, but R is true.
Q351 Mark
Assertion (A): The kingdom Animalia includes only multicellular organisms.
Reason (R): Some members of Animalia, like sponges, are unicellular.
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Correct answer: Option 3 —
A is true, but R is false.
Q361 Mark
Assertion (A): Hierarchical classification organizes living organisms into ranks such as kingdom, phylum, class, order, family, genus, and species.
Reason (R): This system helps in understanding the evolutionary relationships among organisms.
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Correct answer: Option 1 —
Both A and R are true, and R is the correct explanation of A.
Q371 Mark
Assertion (A): Protista is a kingdom that includes only prokaryotic organisms.
Reason (R): Protista consists of eukaryotic organisms, which are distinct from prokaryotes.
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Correct answer: Option 4 —
A is false, but R is true.
Q381 Mark
Assertion (A): The classification of organisms is solely based on their physical characteristics.
Reason (R): Modern classification also considers genetic and evolutionary relationships.
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Correct answer: Option 3 —
A is true, but R is false.
Q391 Mark
Assertion (A): All organisms in the kingdom Plantae are capable of photosynthesis.
Reason (R): Some plants, like parasitic plants, do not perform photosynthesis.
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Correct answer: Option 3 —
A is true, but R is false.
Statement-Based Questions8 questions
Q401 Mark
Statement 1: All living organisms can be classified into five kingdoms.
Statement 2: The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia.
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Correct answer: Option 1 —
Both statements are true.
Q411 Mark
Statement 1: Binomial nomenclature is a system of naming organisms using two names.
Statement 2: The first name in binomial nomenclature represents the species.
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Correct answer: Option 3 —
Only Statement 2 is true.
Q421 Mark
Statement 1: Fungi are classified under the kingdom Plantae.
Statement 2: Fungi obtain their nutrients through absorption.
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Correct answer: Option 3 —
Only Statement 2 is true.
Q431 Mark
Statement 1: The hierarchical classification system includes categories such as kingdom, phylum, class, order, family, genus, and species.
Statement 2: Genus is the lowest rank in the hierarchical classification.
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Correct answer: Option 2 —
Only Statement 1 is true.
Q441 Mark
Statement 1: Monera includes unicellular organisms without a nucleus.
Statement 2: All organisms in Monera are multicellular.
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Correct answer: Option 4 —
Both statements are false.
Q451 Mark
Statement 1: Protista includes both plant-like and animal-like organisms.
Statement 2: Organisms in the kingdom Protista are exclusively unicellular.
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Correct answer: Option 2 —
Only Statement 1 is true.
Q461 Mark
Statement 1: The classification of organisms helps in understanding their evolutionary relationships.
Statement 2: Classification has no significance in biological studies.
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Correct answer: Option 2 —
Only Statement 1 is true.
Q471 Mark
Statement 1: Plantae are autotrophic organisms that perform photosynthesis.
Statement 2: All members of the kingdom Plantae are unicellular.
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Correct answer: Option 4 —
Both statements are false.
