12-bio-botany-unit-I Taxonomy Of Angiosperms

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12-bio-botany-unit-I Taxonomy Of Angiosperms - Quiz

Prepared by
Mr. D. Rajamani, M. Sc.,M. Ed., P. G. Asst Botany A. C. S Mat. Hr Sec. School, Arni. Tiruvannamalai Dist
&
www. Padasalai. Net


Questions and Answers
  • 1. 

    A artificial system of classification of plants was proposed by a

    • A.

      Swedish botanist

    • B.

      British botanist

    • C.

      German Botanist

    • D.

      Indian Botanist

    Correct Answer
    A. Swedish botanist
    Explanation
    The correct answer is Swedish botanist. This is because the question asks about the proposer of an artificial system of classification of plants, and Swedish botanist is the only option that provides information about the proposer's nationality.

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  • 2. 

    Which of the following classification is a sexual system of classification?

    • A.

      Artificial System

    • B.

      Natural System

    • C.

      Phylogenetic System

    • D.

      Natural Selecction

    Correct Answer
    A. Artificial System
    Explanation
    An artificial system of classification is based on specific characteristics chosen by humans, rather than natural relationships between organisms. It is a human-made classification system that groups organisms based on easily observable features, such as physical appearance or behavior. This differs from natural and phylogenetic systems, which aim to reflect the evolutionary relationships between organisms. Therefore, an artificial system of classification is considered a sexual system of classification.

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  • 3. 

    The Botanist who introduced binomial system is 

    • A.

      Gaspard Bauhin

    • B.

      Carolus Linnaeus

    • C.

      Sir Joseph Dalton Hooker

    • D.

      Adolf Engler

    Correct Answer
    A. Gaspard Bauhin
    Explanation
    Gaspard Bauhin is the correct answer because he is credited with introducing the binomial system of plant nomenclature. This system assigns each plant a unique two-part name consisting of a genus and a species epithet. Bauhin's work in the late 16th and early 17th centuries laid the foundation for modern botanical classification and naming conventions. Carolus Linnaeus, although a renowned botanist, is often incorrectly associated with the introduction of the binomial system because he popularized and expanded upon Bauhin's work. Sir Joseph Dalton Hooker and Adolf Engler were influential botanists, but they did not introduce the binomial system.

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  • 4. 

    Genera plantarum of Bentham and Hooker was published in

    • A.

      Three volumes

    • B.

      A single volume

    • C.

      Two volume

    • D.

      Four volume

    Correct Answer
    A. Three volumes
    Explanation
    The correct answer is three volumes. The Genera plantarum of Bentham and Hooker was published in three volumes. This work, authored by George Bentham and Sir Joseph Dalton Hooker, is a comprehensive taxonomic treatment of plant genera. It provides descriptions and classifications of various plant species, making it a valuable resource for botanists and researchers. The fact that it was published in three volumes indicates the extensive nature of the work and the amount of information it contains.

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  • 5. 

    In Bentham and Hooker classification of plants, the present day 'orders' were referred to by them as

    • A.

      Cohorts

    • B.

      Series

    • C.

      Orders

    • D.

      Families

    Correct Answer
    A. Cohorts
    Explanation
    In Bentham and Hooker's classification of plants, they referred to the present day 'orders' as cohorts. This term was used to group plants based on similarities in their characteristics and to categorize them into larger taxonomic units. The use of the term "cohorts" highlights the hierarchical nature of their classification system, with orders being one level below the larger groupings of classes and divisions. This classification system provided a systematic way to organize and study plants, allowing for easier identification and comparison of different species.

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  • 6. 

    Plants having flowers with free petals are place under 

    • A.

      Polypetalae

    • B.

      Monochlamydeae

    • C.

      Monocotyledons

    • D.

      Gamopetalae

    Correct Answer
    A. Polypetalae
    Explanation
    The correct answer is Polypetalae because plants with flowers that have free petals are classified under this category. Polypetalae refers to a group of plants that have flowers with separate or distinct petals. This is in contrast to Gamopetalae, which includes plants with flowers that have fused or joined petals. Monochlamydeae refers to plants with flowers that lack a perianth, and Monocotyledons refers to plants with a single cotyledon in their seed.

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  • 7. 

    Inferae includes

    • A.

      3 orders and 9 families

    • B.

      6 orders and 34 families

    • C.

      4 orders and 23 familes

    • D.

      5 orders and 27 familes

    Correct Answer
    A. 3 orders and 9 families
    Explanation
    Inferae includes 3 orders and 9 families. This means that within the taxonomic classification of Inferae, there are three distinct groups of organisms that share common characteristics and nine subgroups within these groups. The number of orders and families is a way to categorize and organize the diversity of organisms within the Inferae classification.

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  • 8. 

    How many families were described by Bentham and Hooker in their classification?

    • A.

      202

    • B.

      212

    • C.

      204

    • D.

      102

    Correct Answer
    A. 202
    Explanation
    Bentham and Hooker described 202 families in their classification.

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  • 9. 

    In Bentham and Hookers classification of plants, the present by "families" were referred to by them as

    • A.

      Orders

    • B.

      Families

    • C.

      Cohaorts

    • D.

      Series

    Correct Answer
    A. Orders
    Explanation
    Bentham and Hooker's classification of plants referred to the present by "families" as Orders. This means that in their classification system, the term "families" was used to denote the higher taxonomic rank of Orders.

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  • 10. 

    Thalamiflorae includes 

    • A.

      6 orders and 34 families

    • B.

      4 orders and 23 families

    • C.

      5 orders and 27 families

    • D.

      3 orders and 12 families

    Correct Answer
    A. 6 orders and 34 families
    Explanation
    Thalamiflorae includes 6 orders and 34 families. This means that within the Thalamiflorae group, there are six different orders and a total of 34 families.

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  • 11. 

    Which one of the following series includes the epigynous flowers?

    • A.

      Inferae

    • B.

      Thalamiflorae

    • C.

      Disciflorae

    • D.

      Heteromerae

    Correct Answer
    A. Inferae
    Explanation
    The series Inferae includes the epigynous flowers. Epigynous flowers have their ovary positioned below the attachment point of other floral parts, such as the sepals, petals, and stamens. In the Inferae series, the flowers have a superior ovary, which means it is positioned above the attachment point of other floral parts. This arrangement makes the flowers epigynous.

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  • 12. 

    The family included under the series Unisexuales is

    • A.

      Euphorbiaceae

    • B.

      Solanaceae

    • C.

      Malvaceae

    • D.

      Musceae

    Correct Answer
    A. Euphorbiaceae
    Explanation
    The family included under the series Unisexuales is Euphorbiaceae. This is because the other three options, Solanaceae, Malvaceae, and Musaceae, do not belong to the series Unisexuales.

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  • 13. 

    Thespesia populnea belongs to

    • A.

      Malvaceae

    • B.

      Solanaceae

    • C.

      Euphorbiaceae

    • D.

      Musaceae

    Correct Answer
    A. Malvaceae
    Explanation
    Thespesia populnea belongs to the family Malvaceae. This family is known as the mallow family and includes various flowering plants. Thespesia populnea, commonly known as portia tree or Indian tulip tree, is a species of evergreen tree that is native to coastal areas of the tropical and subtropical regions. It is characterized by its large yellow flowers and heart-shaped leaves. The Malvaceae family also includes other well-known plants such as hibiscus and cotton.

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  • 14. 

    Malvaceae is placed in the series 

    • A.

      Thalamiflorae

    • B.

      Inferae

    • C.

      Hetromerae

    • D.

      Disciflorae

    Correct Answer
    A. Thalamiflorae
    Explanation
    Malvaceae is placed in the series Thalamiflorae because this series includes plants that have flowers with a distinct thalamus or receptacle, which is the enlarged area at the base of the flower where the petals, sepals, and other floral parts are attached. Malvaceae, also known as the mallow family, has flowers that possess this characteristic thalamus, making it a member of the Thalamiflorae series.

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  • 15. 

    Anthers are monothecous in 

    • A.

      Malvaceae

    • B.

      Solanaceae

    • C.

      Euphorbiaceae

    • D.

      Musaceae

    Correct Answer
    A. Malvaceae
    Explanation
    Anthers are monothecous in Malvaceae. This means that the anthers in plants belonging to the Malvaceae family have a single chamber or thecae. In contrast, anthers in other plant families such as Solanaceae, Euphorbiaceae, and Musaceae may have multiple chambers or thecae.

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  • 16. 

    In  Abelmoschus esculents, the fruit is

    • A.

      Loculicidal capsule

    • B.

      Drupe

    • C.

      Schizocarp

    • D.

      Regma

    Correct Answer
    A. Loculicidal capsule
    Explanation
    Abelmoschus esculents is a plant species that produces a loculicidal capsule as its fruit. A loculicidal capsule is a type of fruit that splits open along the lines of the locules (compartments) to release the seeds. This type of fruit is commonly found in plants belonging to the mallow family, to which Abelmoschus esculents belongs. Therefore, the correct answer is loculicidal capsule.

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  • 17. 

    Binomial of lady's finger is

    • A.

      Abelmoschus esculentus

    • B.

      Hibiscus cannabinus

    • C.

      Thespesia populnea

    • D.

      Gossypium barbadense

    Correct Answer
    A. Abelmoschus esculentus
    Explanation
    The correct answer is Abelmoschus esculentus because Abelmoschus esculentus is the scientific name for lady's finger, which is a common vegetable also known as okra.

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  • 18. 

    Solanaceae is placed under

    • A.

      Polemoniales

    • B.

      Malvales

    • C.

      Unisexuales

    • D.

      Ranales

    Correct Answer
    A. Polemoniales
    Explanation
    Solanaceae is placed under Polemoniales because it is a family of flowering plants that belongs to the order Polemoniales. This order includes various other families of plants, and Solanaceae is one of them. The plants in Solanaceae family are known for their characteristic features like alternate leaves, usually with a strong odor, and often with a bitter or acrid taste. They also have regular, bisexual flowers and fruit in the form of a berry or capsule.

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  • 19. 

    In which of the following plants the midrib and veins are found with yellowish spines

    • A.

      Solanum xanthocarpum

    • B.

      Solanum melongena

    • C.

      Datura metal

    • D.

      Petunia hybrida

    Correct Answer
    A. Solanum xanthocarpum
    Explanation
    Solanum xanthocarpum is the correct answer because it is commonly known as yellow-fruit nightshade or Kantakari, and it is known for having yellowish spines on its midrib and veins. The other plant options mentioned do not have this characteristic.

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  • 20. 

    The carpels are obliquely placed in the members of 

    • A.

      Solanaceae

    • B.

      Malvaceae

    • C.

      Euphorbiaceae

    • D.

      Musaceae

    Correct Answer
    A. Solanaceae
    Explanation
    The carpels are obliquely placed in the members of Solanaceae. This means that the carpels, which are the female reproductive organs of the plant, are positioned at an angle or slant in Solanaceae plants. This characteristic is specific to Solanaceae and not found in the other plant families mentioned (Malvaceae, Euphorbiaceae, and Musaceae).

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  • 21. 

    Euphorbiaceae includes about?

    • A.

      300 genera

    • B.

      82 genera

    • C.

      90 genera

    • D.

      254 genera

    Correct Answer
    A. 300 genera
    Explanation
    Euphorbiaceae is a large family of flowering plants that includes approximately 300 genera. This family is known for its diverse range of species, which includes various types of succulents, shrubs, and trees. The high number of genera within Euphorbiaceae demonstrates the vast diversity and complexity of this plant family.

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  • 22. 

    Ricinus communis is a

    • A.

      Shrup

    • B.

      Herb

    • C.

      Tree

    • D.

      Cladode

    Correct Answer
    A. Shrup
  • 23. 

    An example of cladode is

    • A.

      Euphorbia tirucalli

    • B.

      Phyllanthus emblica

    • C.

      Jatropha curcas

    • D.

      Ricinus communis

    Correct Answer
    A. Euphorbia tirucalli
    Explanation
    Cladode refers to a modified stem that resembles a leaf and performs photosynthesis. Euphorbia tirucalli is a succulent plant that exhibits this characteristic, where its stem has evolved to perform photosynthesis. The other options, Phyllanthus emblica, Jatropha curcas, and Ricinus communis, do not possess cladodes and have different structures and functions.

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  • 24. 

    In Hevea brasiliensis, the leaves are

    • A.

      Trifoliately compound

    • B.

      Simple

    • C.

      Sessile

    • D.

      Palmately compound

    Correct Answer
    A. Trifoliately compound
    Explanation
    Hevea brasiliensis is a species of rubber tree, and its leaves are trifoliately compound. This means that each leaf is composed of three leaflets attached to a common stalk. This arrangement is characteristic of many leguminous plants, including Hevea brasiliensis. The leaflets are usually arranged in a palmate pattern, radiating from a central point, which further supports the classification of the leaves as trifoliately compound.

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  • 25. 

    "The bird of paradise flower" refers to 

    • A.

      Strelitzia reginae

    • B.

      Musa paradisiaca

    • C.

      Ravenala madagascariensis

    • D.

      Heliconia sp

    Correct Answer
    A. Strelitzia reginae
    Explanation
    The correct answer is Strelitzia reginae. The bird of paradise flower is commonly associated with Strelitzia reginae, which is a species of flowering plant native to South Africa. It is known for its vibrant orange and blue flowers that resemble the feathers of a bird. The other options listed, Musa paradisiaca, Ravenala madagascariensis, and Heliconia sp, are not commonly referred to as the bird of paradise flower.

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  • 26. 

    The phyllotaxy in Musa is

    • A.

      Spiral

    • B.

      Alternate

    • C.

      Alternate

    • D.

      Distichous

    Correct Answer
    A. Spiral
    Explanation
    The phyllotaxy in Musa is spiral. Phyllotaxy refers to the arrangement of leaves on a stem. In spiral phyllotaxy, the leaves are arranged in a spiral pattern around the stem, with each leaf positioned at a specific angle from the previous one. This arrangement allows for maximum exposure to sunlight and efficient use of space. Musa, which includes banana plants, typically exhibits spiral phyllotaxy, with leaves spiraling around the stem in a regular pattern.

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  • 27. 

    In inflorescence in Ravenala madagascariensis is

    • A.

      Compound cyme

    • B.

      Compound raceme

    • C.

      Branched spadix

    • D.

      Simple raceme

    Correct Answer
    A. Compound cyme
    Explanation
    The inflorescence in Ravenala madagascariensis is a compound cyme. This means that the main axis of the inflorescence branches repeatedly, with each branch ending in a single flower. The flowers are arranged in a determinate manner, with the oldest flowers at the base and the youngest at the top. This type of inflorescence is commonly found in plants belonging to the family Musaceae, to which Ravenala madagascariensis belongs.

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  • 28. 

    The number of fertile stamens in Ravenala madagascariensis is

    • A.

      Six

    • B.

      Three

    • C.

      Five

    • D.

      Four

    Correct Answer
    A. Six
    Explanation
    Ravenala madagascariensis is a species of plant commonly known as the Traveler's Palm. It is characterized by its large, fan-shaped leaves and unique inflorescence. The inflorescence of this plant consists of multiple flowers arranged on a long stalk. Each flower has six stamens, which are the male reproductive organs responsible for producing pollen. Therefore, the correct answer is six, as Ravenala madagascariensis has six fertile stamens.

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