General Biology 2 - Quarter 3 Review
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Questions and Answers

What is the main reason for using the Geologic Time Scale?

  • To analyze the composition of the Earth's atmosphere.
  • To understand the evolution of life on Earth. (correct)
  • To classify all the rocks on Earth.
  • To determine the age of the universe.

    • Which of the following is NOT a major group of organisms classified within the Geologic Time Scale?

  • Protists
  • Plants
  • Minerals (correct)
  • Prokaryotes

    • What is a characteristic of prokaryotes?

  • They are always microscopic.
  • They lack a nucleus. (correct)
  • They are multicellular.
  • They have a nucleus.

    • What is the primary role of plants in ecosystems?

    <p>Providing food and shelter for other organisms. (A)</p> Signup and view all the answers

    Which group of organisms had a hard exoskeleton and is often used to date rocks?

    <p>Invertebrates (A)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of vertebrates?

    <p>They are always large and complex. (B)</p> Signup and view all the answers

    What is a key characteristic of the Geologic Time Scale?

    <p>It is dynamic and constantly being revised. (B)</p> Signup and view all the answers

    Which statement is TRUE about the Geologic Time Scale?

    <p>It is used to understand the Earth's history and the evolution of life. (C)</p> Signup and view all the answers

    Which group of plants reproduces via spores?

    <p>Ferns (B)</p> Signup and view all the answers

    When did invertebrates first appear on Earth?

    <p>Around 600 million years ago (D)</p> Signup and view all the answers

    What are trilobites considered important for?

    <p>Dating rocks (D)</p> Signup and view all the answers

    During which era did dinosaurs dominate terrestrial ecosystems?

    <p>Mesozoic (B)</p> Signup and view all the answers

    In which phylum do arthropods belong?

    <p>Arthropods (D)</p> Signup and view all the answers

    Which of the following is an adaptation seen in vertebrates?

    <p>Significant evolutionary changes over millions of years (C)</p> Signup and view all the answers

    What are prokaryotes characterized by?

    <p>Lacking a nucleus and membrane-bound organelles (A)</p> Signup and view all the answers

    Which of the following is a significant role of cyanobacteria?

    <p>They released oxygen into the atmosphere. (B)</p> Signup and view all the answers

    What distinguishes protists from other major groups of organisms?

    <p>They can be either single-celled or multicellular of various forms. (C)</p> Signup and view all the answers

    When did plants first appear in Earth's history?

    <p>Around 500 million years ago (C)</p> Signup and view all the answers

    What role do diatoms play in aquatic ecosystems?

    <p>They are primary producers. (A)</p> Signup and view all the answers

    What are the major groups of organisms classified in the Geologic Time Scale?

    <p>Prokaryotes, protists, and plants (D)</p> Signup and view all the answers

    Which statement about prokaryotes is incorrect?

    <p>They have a well-defined nuclear membrane. (A)</p> Signup and view all the answers

    Which characteristic is NOT associated with plants?

    <p>Always requires moister environments to thrive (D)</p> Signup and view all the answers

    Flashcards

    Role of Plants in Ecosystems

    Plants provide food, oxygen, and habitat for organisms.

    Ferns

    Ferns are vascular plants that reproduce via spores.

    Carboniferous Period

    Time when ferns dominated and formed extensive coal deposits.

    Invertebrates

    Animals without a backbone; make up most animal species.

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    Trilobites

    Extinct marine arthropods known as important index fossils.

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    Vertebrates

    Animals with a backbone, including fish and mammals.

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    Dinosaurs

    A diverse group of reptiles that dominated during the Mesozoic era.

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    Evolution of Vertebrates

    Vertebrates appeared around 500 million years ago, showing significant evolution.

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    Prokaryotes

    The earliest known forms of life on Earth, single-celled, lacking a nucleus.

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    Cyanobacteria

    A type of prokaryote known for performing photosynthesis and producing oxygen.

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    Protists

    Diverse eukaryotic microorganisms that don’t belong to other kingdoms, single or multicellular.

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    Diatoms

    A unique type of protist with silica cell walls, important for oxygen production in water.

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    Plants

    Multicellular eukaryotic organisms capable of photosynthesis, evolved over 500 million years ago.

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    Eukaryotes

    Organisms whose cells contain a nucleus and other organelles, including plants and protists.

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    Photosynthesis

    The process by which organisms like plants convert light energy into chemical energy, producing oxygen.

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    Geologic Time Scale

    A system of chronological dating used to describe Earth's history through major groups of organisms.

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    Major groups of organisms

    Key categories of life forms that existed during specific periods in the geologic time scale.

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    Ecosystem roles of plants

    Plants provide food, oxygen, and habitat which are vital for other organisms.

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    Classification importance

    Using the geologic time scale to classify major groups of organisms helps understand Earth's history.

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    Study Notes

    General Biology 2 - Quarter 3

    • The presentation covers General Biology 2, Quarter 3, at ACNHS, Minos City.
    • Reminders include wearing face masks, frequent hand sanitization, avoiding unnecessary chatting with seatmates, and keeping mobile phones/gadgets temporarily.
    • A class prayer is included, requesting God's presence, joy, learning, fun, kindness, peace, and love for the students and school.
    • A review session involves questions regarding the divisions of the geologic time scale and how major events and life forms exist through time.
    • Learning objectives focus on identifying major organisms in the geologic time scale and explaining evolution and diversity of life.
    • The lesson's main goal is to describe the history of life on Earth, details of the geologic time scale, and the major organism groups present during specific periods.
    • Activity 1 involves analyzing pictures to identify organism groups.
    • Activity 2 is a fact or bluff exercise.
    • Activity 3 includes matching characteristics of organisms.
    • Application questions prompts students to relate concepts discussed to daily life.
    • Students are tasked with using the lesson to answer questions for further comprehension.
    • The final part is an enrichment activity asking students to further research mechanisms of evolution.
    • The presentation concludes with a thank you message.

    Geologic Time Scale

    • The geologic time scale is a system scientists use to divide Earth's history into time periods based on geological and biological events.
    • A key aspect is the classification of major organisms that existed throughout Earth's history.
    • These major groups provide a framework to understand evolution and the diversity of life.

    Major Groups of Organisms

    • Prokaryotes: The earliest known life forms on Earth. Single-celled organisms without a nucleus or membrane-bound organelles. They include bacteria and archaea, appeared around 3.5 billion years ago (early Precambrian Era) and shaped Earth's environment. Cyanobacteria (blue-green algae) were among the first to perform photosynthesis.
    • Protists: A diverse group of eukaryotic microorganisms that don’t fit into other kingdoms. They can be single-celled or multicellular, with various structures and functions. They appeared around 2 billion years ago playing a significant role in the evolution of more complex organisms. Diatoms are a type of protist with unique silica cell walls, important primary producers in aquatic ecosystems.
    • Plants: Multicellular, eukaryotic organisms capable of photosynthesis. They appeared around 500 million years ago and diversified into various forms (e.g., mosses to trees). Plants play a crucial role in ecosystems, providing food, oxygen, and habitats to other organisms. Ferns are a group of plants that reproduce through spores and have vascular tissue for transporting water and nutrients. They were dominant during the Carboniferous period, forming extensive coal deposits.
    • Invertebrates: Animals without backbones. They make up the majority of animal species on Earth and display a wide range of forms and adaptations. Invertebrates emerged around 600 million years ago, diversifying into phyla like arthropods, mollusks, and echinoderms. Trilobites were an extinct group of marine arthropods, living from the Cambrian to the Permian period; they had hard exoskeletons and are important index fossils.
    • Vertebrates: Animals with backbones or spinal columns. They include fish, amphibians, reptiles, birds, and mammals. Vertebrates emerged about 500 million years ago and have undergone significant evolutionary changes. Dinosaurs were a diverse group of reptiles that dominated terrestrial ecosystems during the Mesozoic era, ranging from small, bird-like creatures to large, long-necked herbivores and fearsome carnivores.

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    Q3-GB2 Lesson 5 PDF

    Description

    This quiz covers key concepts from General Biology 2, Quarter 3 at ACNHS, focusing on the geologic time scale, major organisms, and evolution. It includes activities for identifying organisms and understanding their historical significance. Prepare to engage with questions that enhance your knowledge of life's diversity throughout Earth's history.

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