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Biology Chapter 3: Plant Kingdom
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Biology Chapter 3: Plant Kingdom

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Questions and Answers

Who proposed the Five Kingdom classification system?

  • Hooker
  • Whittaker (correct)
  • Darwin
  • Linnaeus
  • Which of the following kingdoms is not included in the Five Kingdom classification?

  • Chromista (correct)
  • Plantae
  • Fungi
  • Animalia
  • Which organisms having cell walls were once included in Plantae but now excluded?

  • Algae, Bryophytes, Pteridophytes
  • Gymnosperms, Angiosperms, Cyanobacteria
  • Algae, Cyanobacteria, Fungi
  • Fungi, Monera, Protista (correct)
  • What term is no longer appropriate for cyanobacteria?

    <p>Blue green algae</p> Signup and view all the answers

    Which system of classification used gross superficial morphological characters?

    <p>Artificial systems</p> Signup and view all the answers

    What did early systems of classification primarily rely on?

    <p>Morphological characters</p> Signup and view all the answers

    Why are artificial systems of classification considered inadequate?

    <p>They separate closely related species</p> Signup and view all the answers

    Which type of classification system is based on natural affinities among organisms?

    <p>Natural systems</p> Signup and view all the answers

    Study Notes

    Introduction to Plant Kingdom

    • Kingdom Plantae, also known as the plant kingdom, is a broad classification of living organisms.
    • Whittaker's Five Kingdom classification system includes Monera, Protista, Fungi, Animalia, and Plantae.

    Evolution of Understanding of Plant Kingdom

    • Our understanding of the plant kingdom has changed over time.
    • Fungi, Monera, and Protista with cell walls have been excluded from Plantae in recent classifications.
    • Cyanobacteria, previously referred to as blue-green algae, are no longer considered "algae".

    Classification within Plantae

    • Algae, Bryophytes, Pteridophytes, Gymnosperms, and Angiosperms are classified under Plantae.
    • Angiosperms are further classified into subgroups based on natural affinities among organisms.

    Early Classification Systems

    • Early classification systems used superficial morphological characters such as habit, color, number, and shape of leaves.
    • These systems were artificial, separating closely related species based on a few characteristics.
    • Systems developed by Linnaeus were based on vegetative characters or androecium structure.

    Limitations of Early Classification Systems

    • Early systems gave equal weightage to vegetative and sexual characteristics, which is not acceptable.
    • Vegetative characters are easily affected by environmental factors.

    Natural Classification Systems

    • Natural classification systems are based on natural affinities among organisms.
    • These systems consider multiple characteristics, not just vegetative or sexual traits.

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    Description

    Learn about the classification of living organisms and the Plant Kingdom, including the Five Kingdom classification and the characteristics of Plantae.

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