12-bio-botany-unit-I Taxonomy Of Angiosperms
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Binomial of lady's finger is
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Abelmoschus esculentus
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Hibiscus cannabinus
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Thespesia populnea
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Gossypium barbadense
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Prepared by
Mr. D. Rajamani, M. Sc.,M. Ed., P. G. Asst Botany A. C. S Mat. Hr Sec. School, Arni. Tiruvannamalai Dist
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- 2.
Plants having flowers with free petals are place under
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Polypetalae
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Monochlamydeae
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Monocotyledons
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Gamopetalae
Correct Answer
A. PolypetalaeExplanation
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.Rate this question:
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- 3.
A artificial system of classification of plants was proposed by a
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Swedish botanist
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British botanist
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German Botanist
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Indian Botanist
Correct Answer
A. Swedish botanistExplanation
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.Rate this question:
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- 4.
Malvaceae is placed in the series
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Thalamiflorae
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Inferae
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Hetromerae
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Disciflorae
Correct Answer
A. ThalamifloraeExplanation
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.Rate this question:
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- 5.
Genera plantarum of Bentham and Hooker was published in
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Three volumes
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A single volume
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Two volume
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Four volume
Correct Answer
A. Three volumesExplanation
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.Rate this question:
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- 6.
In Abelmoschus esculents, the fruit is
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Loculicidal capsule
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Drupe
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Schizocarp
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Regma
Correct Answer
A. Loculicidal capsuleExplanation
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.Rate this question:
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- 7.
Inferae includes
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3 orders and 9 families
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6 orders and 34 families
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4 orders and 23 familes
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5 orders and 27 familes
Correct Answer
A. 3 orders and 9 familiesExplanation
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.Rate this question:
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- 8.
How many families were described by Bentham and Hooker in their classification?
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202
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212
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204
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102
Correct Answer
A. 202Explanation
Bentham and Hooker described 202 families in their classification.Rate this question:
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- 9.
Solanaceae is placed under
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Polemoniales
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Malvales
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Unisexuales
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Ranales
Correct Answer
A. PolemonialesExplanation
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.Rate this question:
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- 10.
In which of the following plants the midrib and veins are found with yellowish spines
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Solanum xanthocarpum
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Solanum melongena
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Datura metal
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Petunia hybrida
Correct Answer
A. Solanum xanthocarpumExplanation
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.Rate this question:
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- 11.
The phyllotaxy in Musa is
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Spiral
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Alternate
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Alternate
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Distichous
Correct Answer
A. SpiralExplanation
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.Rate this question:
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- 12.
Which of the following classification is a sexual system of classification?
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Artificial System
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Natural System
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Phylogenetic System
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Natural Selecction
Correct Answer
A. Artificial SystemExplanation
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.Rate this question:
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- 13.
The family included under the series Unisexuales is
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Euphorbiaceae
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Solanaceae
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Malvaceae
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Musceae
Correct Answer
A. EuphorbiaceaeExplanation
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.Rate this question:
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- 14.
Thalamiflorae includes
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6 orders and 34 families
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4 orders and 23 families
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5 orders and 27 families
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3 orders and 12 families
Correct Answer
A. 6 orders and 34 familiesExplanation
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.Rate this question:
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- 15.
In Bentham and Hooker classification of plants, the present day 'orders' were referred to by them as
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Cohorts
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Series
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Orders
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Families
Correct Answer
A. CohortsExplanation
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.Rate this question:
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- 16.
Anthers are monothecous in
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Malvaceae
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Solanaceae
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Euphorbiaceae
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Musaceae
Correct Answer
A. MalvaceaeExplanation
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.Rate this question:
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- 17.
An example of cladode is
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Euphorbia tirucalli
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Phyllanthus emblica
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Jatropha curcas
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Ricinus communis
Correct Answer
A. Euphorbia tirucalliExplanation
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.Rate this question:
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- 18.
Ricinus communis is a
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Shrup
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Herb
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Tree
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Cladode
Correct Answer
A. Shrup -
- 19.
Thespesia populnea belongs to
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Malvaceae
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Solanaceae
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Euphorbiaceae
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Musaceae
Correct Answer
A. MalvaceaeExplanation
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.Rate this question:
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- 20.
In Hevea brasiliensis, the leaves are
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Trifoliately compound
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Simple
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Sessile
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Palmately compound
Correct Answer
A. Trifoliately compoundExplanation
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.Rate this question:
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- 21.
In Bentham and Hookers classification of plants, the present by "families" were referred to by them as
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Orders
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Families
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Cohaorts
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Series
Correct Answer
A. OrdersExplanation
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.Rate this question:
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- 22.
The Botanist who introduced binomial system is
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Gaspard Bauhin
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Carolus Linnaeus
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Sir Joseph Dalton Hooker
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Adolf Engler
Correct Answer
A. Gaspard BauhinExplanation
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.Rate this question:
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- 23.
Euphorbiaceae includes about?
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300 genera
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82 genera
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90 genera
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254 genera
Correct Answer
A. 300 generaExplanation
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.Rate this question:
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- 24.
Which one of the following series includes the epigynous flowers?
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Inferae
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Thalamiflorae
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Disciflorae
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Heteromerae
Correct Answer
A. InferaeExplanation
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.Rate this question:
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- 25.
The carpels are obliquely placed in the members of
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Solanaceae
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Malvaceae
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Euphorbiaceae
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Musaceae
Correct Answer
A. SolanaceaeExplanation
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).Rate this question:
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- 26.
The number of fertile stamens in Ravenala madagascariensis is
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Six
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Three
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Five
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Four
Correct Answer
A. SixExplanation
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.Rate this question:
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- 27.
"The bird of paradise flower" refers to
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Strelitzia reginae
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Musa paradisiaca
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Ravenala madagascariensis
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Heliconia sp
Correct Answer
A. Strelitzia reginaeExplanation
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.Rate this question:
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- 28.
In inflorescence in Ravenala madagascariensis is
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Compound cyme
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Compound raceme
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Branched spadix
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Simple raceme
Correct Answer
A. Compound cymeExplanation
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.Rate this question:
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Mar 21, 2023Quiz Edited by
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