Taxonomy Of Angiosperms: Classification Systems......

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Taxonomy Of Angiosperms: Classification Systems...... - Quiz

E-Short Term Course in Botany(12.05.2020 to 17.05.2020)


Questions and Answers
  • 1. 

     The number of currently known, described and accepted plant species is about......

    • A.

      300000

    • B.

      45000

    • C.

      374000

    • D.

      250000

    Correct Answer
    C. 374000
    Explanation
    The correct answer is 374000. This number represents the approximate count of currently known, described, and accepted plant species. It indicates the vast diversity of plant life on Earth, with thousands of different species identified and cataloged by scientists.

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  • 2. 

    .........................introduced the term Taxonomy.

    • A.

      A. P. de Candolle

    • B.

      Linnaeus

    • C.

      Theophrastus

    • D.

      Darwin

    Correct Answer
    A. A. P. de Candolle
    Explanation
    A. P. de Candolle is credited with introducing the term Taxonomy.

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  • 3. 

    Theophrastus classified plants based on his observation in ...........of Lyceum in Athens

    • A.

      Grassland   

    • B.

      Garden

    • C.

      Forest

    • D.

      Lake

    Correct Answer
    B. Garden
    Explanation
    Theophrastus classified plants based on his observation in the garden of Lyceum in Athens.

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  • 4. 

    Which is the type of Pre-Darwinian classification system?

    • A.

      Systems based on habit

    • B.

      Sexual systems  

    • C.

      Systems based on form-relationship

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    The correct answer is "All of the above" because Pre-Darwinian classification systems included systems based on habit, sexual systems, and systems based on form-relationship. These different types of classification systems were used to categorize and organize organisms before Charles Darwin's theory of evolution was widely accepted.

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  • 5. 

    Dioscorides gave information about 600 plants in.......

    • A.

      Species plantarum

    • B.

      Materia Medica

    • C.

        Historia Plantarum

    • D.

       none of the above

    Correct Answer
    B. Materia Medica
    Explanation
    Dioscorides gave information about 600 plants in "Materia Medica".

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  • 6. 

    ................... was the first Italian botanist who proposed plant classification based on morphology.

    • A.

      Andraea Caesalpino

    • B.

      Charles Darwin

    • C.

      Carl Linnaeus

    • D.

      Rudolf Camerarius

    Correct Answer
    A. Andraea Caesalpino
    Explanation
    Andraea Caesalpino is the correct answer because he was the first Italian botanist to propose plant classification based on morphology. Caesalpino's work in the late 16th century laid the foundation for the modern system of plant classification. He emphasized the importance of observing and categorizing plant structures, such as leaves, flowers, and fruits, in order to understand their relationships and organize them into groups. His classification system was influential and paved the way for later botanists, including Carl Linnaeus, to further develop and refine the field of plant taxonomy.

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  • 7. 

    Bentham and Hooker published their work in ...............volumes.

    • A.

      One

    • B.

      Three

    • C.

      Four

    • D.

      Two

    Correct Answer
    B. Three
    Explanation
    Bentham and Hooker published their work in three volumes. This means that their work was extensive and required multiple volumes to contain all the information they wanted to present. Publishing in three volumes suggests that the subject matter was complex and required a comprehensive treatment.

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  • 8. 

    Hutchinsons classification is base on..............principles.

    • A.

      10

    • B.

      20

    • C.

      36

    • D.

      24

    Correct Answer
    D. 24
    Explanation
    Hutchinson's classification is based on 24 principles.

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  • 9. 

    .....................was international authority on Phytogeography and origin & phylogeny of flowering plants

    • A.

      Albert Magnus

    • B.

      Armen Takhtajan

    • C.

      Charles Darwin

    • D.

      Carl Linnaeus

    Correct Answer
    B. Armen Takhtajan
    Explanation
    Armen Takhtajan was an international authority on Phytogeography, the study of the distribution of plants, and the origin and phylogeny of flowering plants. He made significant contributions to the field and his expertise was recognized globally.

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  • 10. 

    Takhtajan named flowering plants as..................

    • A.

      Magnolipsida      

    • B.

      Liliopsida  

    • C.

      Magnoliophyta  

    • D.

      Angiosperms

    Correct Answer
    C. Magnoliophyta  
    Explanation
    Takhtajan named flowering plants as Magnoliophyta. This is the correct answer because Magnoliophyta is the scientific name for the division of plants commonly known as angiosperms or flowering plants. This division includes all plants that produce flowers and fruits, and it is one of the major groups of plants in the plant kingdom.

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  • 11. 

    Bentham and Hooker placed gymnosperms...................

    • A.

      In between dicots and monocots

    • B.

      In between bryophytes  and pteridophytes

    • C.

      After monocots

    • D.

      Before dicots

    Correct Answer
    A. In between dicots and monocots
    Explanation
    Bentham and Hooker placed gymnosperms in between dicots and monocots because they observed that gymnosperms share some characteristics with dicots, such as the presence of vascular tissue and seeds, but also share some characteristics with monocots, such as the absence of true flowers and the presence of naked seeds. This placement reflects the evolutionary relationships and similarities between these plant groups.

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  • 12. 

    ................merged Asclepiadaceae with Apocynaceae which is been supported by Molecular analysis.

    • A.

      Theophrastus

    • B.

      Bentham    

    • C.

      Takhtajan

    • D.

      Linnaeus    

    Correct Answer
    C. Takhtajan
    Explanation
    Takhtajan is the correct answer because he merged the plant families Asclepiadaceae and Apocynaceae based on molecular analysis. The merging of these two families was supported by genetic studies, which showed that they are closely related and share common characteristics. This reclassification was a significant contribution to the field of plant taxonomy and helped to improve our understanding of the evolutionary relationships between different plant species.

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  • 13. 

    Now a day the term cohort of Bentham and Hookers classification system is treated as....

    • A.

      Family

    • B.

      Order

    • C.

      Genus

    • D.

      Class

    Correct Answer
    B. Order
    Explanation
    In the Bentham and Hooker classification system, the term "cohort" is used to refer to a group of related plant families. Therefore, the correct answer in this context is "order" because an order consists of multiple families.

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  • 14. 

    Rolf Dahlgren’s ....................continued his work after his death.

    • A.

      Sister

    • B.

      Wife

    • C.

      Daughter

    • D.

      Student

    Correct Answer
    B. Wife
    Explanation
    Rolf Dahlgren's wife continued his work after his death.

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  • 15. 

    .................. closely approached the system proposed by Dahlgren.

    • A.

      Albert Magnus    

    • B.

      John Hutchinson

    • C.

      Carl Linnaeus      

    • D.

      Robert Throne

    Correct Answer
    D. Robert Throne
    Explanation
    The question is asking which person closely approached the system proposed by Dahlgren. Based on the given options, Robert Throne is the correct answer.

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  • 16. 

    ............... is considered as father of botany.

    • A.

      Takhtajan  

    • B.

      Magnus      

    • C.

      Linnaeus    

    • D.

      Theophrastus

    Correct Answer
    D. Theophrastus
    Explanation
    Theophrastus is considered as the father of botany because he was one of the first Greek philosophers to extensively study and document plants. He wrote a book called "Enquiry into Plants" which classified and described over 500 different types of plants. His work laid the foundation for the scientific study of plants and greatly influenced future botanists and scientists in their understanding of plant life.

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  • 17. 

    Full form of APG is .......................

    • A.

      Applied Plant Group    

    • B.

      Angiosperm Phylogeny Group

    • C.

      Annual Pattern Gene

    • D.

      All of above

    Correct Answer
    B. Angiosperm Phylogeny Group
    Explanation
    The correct answer is "Angiosperm Phylogeny Group". The Angiosperm Phylogeny Group is a group of plant scientists that work together to develop and update the classification system for flowering plants (angiosperms). They study the evolutionary relationships and genetic diversity among angiosperms to create a phylogenetic tree that represents their evolutionary history. This classification system is widely used in the field of botany to understand the relationships between different plant species.

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  • 18. 

    In APGC system above or parallel to the level of orders and families, the term ................................is used more freely.

    • A.

      Clade

    • B.

      Superorder

    • C.

      Subfamily

    • D.

      Subclass

    Correct Answer
    A. Clade
    Explanation
    In the APGC system, the term "clade" is used more freely above or parallel to the level of orders and families. A clade refers to a group of organisms that includes an ancestor and all of its descendants. It represents a branch on the evolutionary tree and is based on shared characteristics and common ancestry. In this system, the term "clade" is used to describe groups of organisms that are more inclusive than orders and families, allowing for a broader classification of species.

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  • 19. 

    .............. genes are used by APG for molecular studies.

    • A.

      AtpB

    • B.

       rbcL

    • C.

      18S rDNA 

    • D.

      All of the Above

    Correct Answer
    D. All of the Above
    Explanation
    APG (Angiosperm Phylogeny Group) uses all of the mentioned genes (atpB, rbcL, and 18S rDNA) for molecular studies. These genes are commonly used in phylogenetic analyses to investigate the evolutionary relationships among angiosperms. The atpB gene encodes a subunit of ATP synthase, the rbcL gene encodes the large subunit of the enzyme Rubisco, and the 18S rDNA gene is a component of the ribosomal RNA. By studying these genes, APG can gain insights into the evolutionary history and classification of angiosperms.

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  • 20. 

    ANA grade comes under...............

    • A.

      Monocots  

    • B.

      Eudicots    

    • C.

      Early angiosperms

    • D.

      Dicots

    Correct Answer
    C. Early angiosperms
    Explanation
    The given question asks about the category under which the ANA grade comes. The correct answer is "Early angiosperms." This suggests that the ANA grade is a classification or category within the group of early angiosperms.

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  • 21. 

    In ..............classification system traditional division of angiosperm has not been done.

    • A.

      Cronquist  

    • B.

      Takhtajan  

    • C.

      APG

    • D.

      None of the above

    Correct Answer
    C. APG
    Explanation
    The APG (Angiosperm Phylogeny Group) classification system does not follow the traditional division of angiosperms. Unlike the Cronquist and Takhtajan systems, which classify angiosperms based on morphological characteristics, the APG system uses molecular data to determine the relationships between different groups of angiosperms. This approach allows for a more accurate and comprehensive classification, as it takes into account the evolutionary history and genetic similarities of angiosperms. Therefore, the APG system does not adhere to the traditional division of angiosperms.

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  • 22. 

    APG II is published in the year...........

    • A.

      2016

    • B.

      1998

    • C.

      2009

    • D.

      2003

    Correct Answer
    D. 2003
    Explanation
    The correct answer is 2003 because the question asks for the year in which APG II was published, and out of the given options, 2003 is the only year mentioned.

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  • 23. 

    How many versions of APG classification system are available?

    • A.

      One

    • B.

      Two

    • C.

      Three

    • D.

      Four

    Correct Answer
    D. Four
    Explanation
    There are four versions of the APG classification system available.

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  • 24. 

    Names to informal groups are not according to ICBN is demerit of APG calssification.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is stating that naming informal groups according to the International Code of Nomenclature for algae, fungi, and plants (ICBN) is a disadvantage of the APG classification system. This means that the APG classification system does not adhere to the naming conventions set by the ICBN. Therefore, the correct answer is true.

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  • 25. 

    ) According to APG IV monocots are recognized as a monophyletic group        ..

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    According to the APG IV classification system, monocots are recognized as a monophyletic group. This means that they share a common ancestor and include all of its descendants. Monocots, or monocotyledons, are a type of flowering plant characterized by having one cotyledon (seed leaf), parallel veined leaves, and flower parts in multiples of three. The recognition of monocots as a monophyletic group is based on extensive research and analysis of their evolutionary relationships and genetic similarities. Therefore, the statement "True" is correct.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 11, 2020
    Quiz Created by
    Bhauravdangat

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