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[A] : Bentham and Hooker did not divide ...

[A] : Bentham and Hooker did not divide the seed plants into dicotyledons , Gymnosperms and Monocotyledons .
[R] : Hutchinson has recognised 201 families of angiosperms .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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Which class has been placed in between dicotyledons and monocotyledons by Bentham and Hooker

A Those plants which produce seeds, without the formation of fruits are called Gymnosperms. R Endosperm is triploid in Angiosperms

[A]: Angiosperms and gymnosperms both are flowering plants . [R] : They both form covered seeds .

Assertion: Seed plants are highly evolved. Reason: Seeds are found in gymnosperm and angiosperms.

Go through the following statements (i) The most widely used compound as source of ethylene is ethephon. (ii) Ethylene helps the plants to increa their absorption surface by promotin root growth and root hair formation. (iii) 2, 4 - D is mainly used to kill mature monocotyledonous plants. (iv) Spraying juvenile conifers with GAs has- tens the maturity period, thus leading to early seed production. Which of these are correct

Which family of flowering plants has the smallest seeds ?

Give a description of the family Fabaceae taking the following point into consideration : (i) systematic position in Bentham and Hooker's system of classification (ii) salient features (iii) inflorescence (iv) floral diagram and floral formula (v) botanical names and economic importance of five common plants.

Study the following statements carefully and give the answer A) Belladonna and ashwagandha are the medicinal plants that belong to Solanaceae family B) Tulips produce very beautiful flowers and belong to Liliaceae family C) A flower is a modified shoot, meant for sexual reproduction D) After fertilisation ovary and ovule convert into fruit and seed respectively in gymnospermic plants angiosperme, How many statements are correct from these?

Read the following statements. P : The taxonomic hierarchy for Brassica campectris can be written as Plante rarr Phanerogamae rarr Angiospermae rarr Dicotyledonae rarr Parietals rarr Brassicaces rarr Brassica rarr campestris. Q : Tautonym is the taxonomic designation used for certain plants having trinomial nomenclature. R : A chaaracter present in an ancestral species and shared exclusively by its evolutionary descendants is referred to as synapomorphy. S : Family Fabaceae is divided into three sub-families, i.e., Leguminosa, Mimosaceae and Caesalpiniaceae. Whcih of the following combinations of above statements is correct ?

TRUEMEN BIOLOGY ENGLISH-Taxonomy(Systematics) -ASSERTION AND REASON
  1. [A] : A phylogenetic system of classification is also a natural system...

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  2. [A] : Chromosome number and chromosome morphology are helpful in the e...

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  3. [A] : Cereals belong to family gramineae. [R] : Gramineae consists o...

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  4. [A] : Botanical nomenclature is independent of zoological nomenclature...

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  5. [A] : Plants brought from the wild into cultivation retain original na...

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  6. [A] : Bentham and Hooker did not divide the seed plants into dicotyled...

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  7. [A] : Allopatric species are geographically isolated whereas sympatric...

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  8. [A] : To give a scientific name to a plant , there is ICBN . [R] : T...

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  9. [A] : Natural & Phylogenetic systems of classification are similar . ...

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  10. Assertion. Species are static units in classification. Reason. Speci...

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  11. [A] : Unicellular organisms are found in 3 kingdoms . [R] : These ki...

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  12. [A] : Unicellular organisms occur in 3 kingdoms . [R] : Multicellul...

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  13. Assertion. Species are static units in classification. Reason. Speci...

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  14. Assertion. Linnaeus is regarded the father of taxonomy. Reason. He g...

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  15. Assertion. Conservative characters are more useful in classification. ...

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  16. Assertion. Linnaeus insisted that the scientific names should be latin...

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  17. Assertion. Hierarchial system of classification is useful in that it r...

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  18. [A] : Kingdom Archaea is a domain . [R] : Domain is a category above...

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