CH 1: The classification of organisms

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What is a key characteristic of protists?

Autotrophic nature (correct)

Presence in terrestrial environments

Tissue differentiation

Unicellularity and multicellularity

Which group of protists is primarily autotrophic and forms the foundation of aquatic food chains?

Algae

Fungi

Plant-like Protists (correct)

Animal-like Protists

What type of organisms are zooplankton?

Decomposers

Unicellular autotrophs

Photosynthetic organisms

Multicellular heterotrophs (correct)

What do fungi primarily use as sources of nutrients?

Living organisms Signup and view all the answers

Which organism lacks cellular structures and relies on host cells for replication?

Viruses Signup and view all the answers

What is the role of fungi in ecosystems?

Nutrient cycling by decomposing dead organic matter Signup and view all the answers

Which characteristic distinguishes viruses from other organisms?

Dependence on host cells for replication Signup and view all the answers

What is the primary role of viruses?

Causing diseases and disease transmission Signup and view all the answers

Which category of organisms can be both autotrophic and heterotrophic?

Protists Signup and view all the answers

How do protists exhibit locomotion?

Using flagella or pseudopodia Signup and view all the answers

What is the basic structural characteristic of bacteria?

Lack of a membrane-bound nucleus Signup and view all the answers

Which shape is NOT commonly observed in bacteria?

Fungi (filamentous) Signup and view all the answers

How do autotrophic bacteria obtain nutrition?

Through photosynthesis or chemosynthesis Signup and view all the answers

Which process is the primary mode of reproduction in bacteria?

Binary fission Signup and view all the answers

What is the function of endospores in bacteria?

To enable survival under unfavorable conditions Signup and view all the answers

Which Kingdom do protists belong to?

Kingdom Protista Signup and view all the answers

Where do protists primarily inhabit?

Aquatic environments Signup and view all the answers

What distinguishes protists from organisms in the plant, animal, or fungal kingdoms?

Belonging to the Kingdom Protista. Signup and view all the answers

Which of the following is NOT a common shape exhibited by bacteria?

Cuboidal (cube-shaped) Signup and view all the answers

What distinguishes autotrophic bacteria from heterotrophic bacteria?

Their capability to synthesize their own food. Signup and view all the answers

How do bacteria reproduce under normal conditions?

Through binary fission Signup and view all the answers

What is the primary structural component of a bacterial cell wall?

Polysaccharides Signup and view all the answers

Which bacterial shape is comma-shaped?

Vibrio Signup and view all the answers

How do autotrophic bacteria obtain nutrition?

By photosynthesis or chemosynthesis Signup and view all the answers

What is the primary mode of reproduction in bacteria under unfavorable conditions?

Endospore formation Signup and view all the answers

Which category do protists belong to?

Kingdom Protista Signup and view all the answers

What distinguishes protists from organisms in the plant, animal, or fungal kingdoms?

They possess a membrane-bound nucleus Signup and view all the answers

What is the basic structure of bacterial cells?

Cell wall Signup and view all the answers

What type of reproduction occurs primarily in bacteria?

Binary fission Signup and view all the answers

What is the primary way bacteria obtain nutrition?

By absorbing nutrients from the environment directly through their cell membrane Signup and view all the answers

Which group of organisms primarily obtain nutrients as parasites from living organisms?

Animal-like protists Signup and view all the answers

Which organism reproduces both sexually and asexually, and can produce spores for dispersal?

Fungi Signup and view all the answers

Which group of organisms is multicellular and contains various photosynthetic pigments?

Algae Signup and view all the answers

Which group of organisms lacks cellular structures and relies on host cells for replication?

Viruses Signup and view all the answers

Which organism plays a crucial role in nutrient cycling by decomposing dead organic matter?

Fungi Signup and view all the answers

Which group of organisms can be found in both aquatic and terrestrial environments?

Fungi Signup and view all the answers

Which organism is commonly known as seaweeds and can be free-floating or sessile?

Algae Signup and view all the answers

Which group of organisms primarily obtain nutrients as saprotrophs from dead organic matter?

Fungi Signup and view all the answers

Which organism is primarily known for causing diseases in plants and animals?

Viruses Signup and view all the answers

Which group of organisms is primarily found in water and can be both autotrophic and heterotrophic?

Protists Signup and view all the answers

Which group of organisms is primarily multicellular, contains various photosynthetic pigments, and can be both free-floating and sessile?

Algae Signup and view all the answers

Which organisms are primarily unicellular, heterotrophic, and some of which are parasitic, causing diseases like malaria?

Animal-like protists Signup and view all the answers

Which organisms are primarily found in water, can be both autotrophic and heterotrophic, and can exhibit locomotion using flagella or pseudopodia?

Protists Signup and view all the answers

Which group of organisms is primarily multicellular, has chitin-containing cell walls, and can reproduce both sexually and asexually, producing spores for dispersal?

Fungi Signup and view all the answers

Which group of organisms consists of genetic material (DNA or RNA) enclosed in a protein coat called a capsid, lacks cellular structures, and relies on host cells for replication?

Viruses Signup and view all the answers

Which organisms play a crucial role in nutrient cycling by decomposing dead organic matter and releasing nutrients back into the soil?

Fungi Signup and view all the answers

Which organisms are primarily found in aquatic environments, are primarily autotrophic, and form the foundation of aquatic food chains?

Phytoplankton Signup and view all the answers

Which organisms are primarily known for causing diseases in plants and animals, and can form mutualistic relationships with other organisms?

Fungi Signup and view all the answers

Which organisms primarily obtain nutrients as parasites from living organisms?

Animal-like protists Signup and view all the answers

Which organisms play a significant role in disease transmission and have shaped the course of human history?

Viruses Signup and view all the answers

Which organism, classified under Kingdom Monera, exhibits a spiral-shaped structure?

Spirillum Signup and view all the answers

Which nutritional strategy enables bacteria to synthesize their own food through the use of chemical reactions?

Chemosynthesis Signup and view all the answers

Which statement best describes the reproduction of bacteria under unfavorable conditions?

Bacteria form endospores, which are resilient structures that enable survival until conditions improve Signup and view all the answers

Which characteristic distinguishes protists from other eukaryotic organisms?

Protists do not fit neatly into the plant, animal, or fungal kingdoms Signup and view all the answers

Which process do bacteria use to obtain external sources of nutrition?

Endocytosis Signup and view all the answers

Which statement best describes the role of bacteria in ecosystems?

Most bacteria are beneficial and participate in vital ecological processes Signup and view all the answers

Which nutritional strategy allows some protists to produce their own food using light energy?

Photosynthesis Signup and view all the answers

Which statement best describes the structure of bacterial cells?

Bacterial cells are prokaryotic and lack a membrane-bound nucleus Signup and view all the answers

Which nutritional strategy allows bacteria to obtain food using chemical reactions?

Chemosynthesis Signup and view all the answers

Which statement best describes the reproduction of bacteria under normal conditions?

Bacteria undergo binary fission, producing daughter cells with identical genetic material Signup and view all the answers

CH 1: The classification of organisms

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Questions and Answers

What is a key characteristic of protists?

Which group of protists is primarily autotrophic and forms the foundation of aquatic food chains?

What type of organisms are zooplankton?

What do fungi primarily use as sources of nutrients?

Which organism lacks cellular structures and relies on host cells for replication?

What is the role of fungi in ecosystems?

Which characteristic distinguishes viruses from other organisms?

What is the primary role of viruses?

Which category of organisms can be both autotrophic and heterotrophic?

How do protists exhibit locomotion?

What is the basic structural characteristic of bacteria?

Which shape is NOT commonly observed in bacteria?

How do autotrophic bacteria obtain nutrition?

Which process is the primary mode of reproduction in bacteria?

What is the function of endospores in bacteria?

Which Kingdom do protists belong to?

Where do protists primarily inhabit?

What distinguishes protists from organisms in the plant, animal, or fungal kingdoms?

Which of the following is NOT a common shape exhibited by bacteria?

What distinguishes autotrophic bacteria from heterotrophic bacteria?

How do bacteria reproduce under normal conditions?

What is the primary structural component of a bacterial cell wall?

Which bacterial shape is comma-shaped?

How do autotrophic bacteria obtain nutrition?

What is the primary mode of reproduction in bacteria under unfavorable conditions?

Which category do protists belong to?

What distinguishes protists from organisms in the plant, animal, or fungal kingdoms?

What is the basic structure of bacterial cells?

What type of reproduction occurs primarily in bacteria?

What is the primary way bacteria obtain nutrition?

Which group of organisms primarily obtain nutrients as parasites from living organisms?

Which organism reproduces both sexually and asexually, and can produce spores for dispersal?

Which group of organisms is multicellular and contains various photosynthetic pigments?

Which group of organisms lacks cellular structures and relies on host cells for replication?

Which organism plays a crucial role in nutrient cycling by decomposing dead organic matter?

Which group of organisms can be found in both aquatic and terrestrial environments?

Which organism is commonly known as seaweeds and can be free-floating or sessile?

Which group of organisms primarily obtain nutrients as saprotrophs from dead organic matter?

Which organism is primarily known for causing diseases in plants and animals?

Which group of organisms is primarily found in water and can be both autotrophic and heterotrophic?

Which group of organisms is primarily multicellular, contains various photosynthetic pigments, and can be both free-floating and sessile?

Which organisms are primarily unicellular, heterotrophic, and some of which are parasitic, causing diseases like malaria?

Which organisms are primarily found in water, can be both autotrophic and heterotrophic, and can exhibit locomotion using flagella or pseudopodia?

Which group of organisms is primarily multicellular, has chitin-containing cell walls, and can reproduce both sexually and asexually, producing spores for dispersal?

Which group of organisms consists of genetic material (DNA or RNA) enclosed in a protein coat called a capsid, lacks cellular structures, and relies on host cells for replication?

Which organisms play a crucial role in nutrient cycling by decomposing dead organic matter and releasing nutrients back into the soil?

Which organisms are primarily found in aquatic environments, are primarily autotrophic, and form the foundation of aquatic food chains?

Which organisms are primarily known for causing diseases in plants and animals, and can form mutualistic relationships with other organisms?

Which organisms primarily obtain nutrients as parasites from living organisms?

Which organisms play a significant role in disease transmission and have shaped the course of human history?

Which organism, classified under Kingdom Monera, exhibits a spiral-shaped structure?

Which nutritional strategy enables bacteria to synthesize their own food through the use of chemical reactions?

Which statement best describes the reproduction of bacteria under unfavorable conditions?

Which characteristic distinguishes protists from other eukaryotic organisms?

Which process do bacteria use to obtain external sources of nutrition?

Which statement best describes the role of bacteria in ecosystems?

Which nutritional strategy allows some protists to produce their own food using light energy?

Which statement best describes the structure of bacterial cells?

Which nutritional strategy allows bacteria to obtain food using chemical reactions?

Which statement best describes the reproduction of bacteria under normal conditions?

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