Tag: systematics of living world

Questions Related to systematics of living world

Phylogenetic system of classification is proposed by

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. John Hutchinson

  2. Carolus Linnaeus

  3. George Bentham

  4. Engler and Prantl

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Correct Option: D
Explanation:

  • Initially, the Phylogenetic system was proposed by Engler and Prantl. In their treatise 'Die Naturlichen Pflanzen Familien', they arranged the flowering plants according to the increasing complexity of their floral morphology. 
  • John Hutchinson was a British botanist associated with Royal botanic gardens, Kew, England.  His phylogenetic system first appeared as  "The Families of Flowering plants " in two volumes. 
  • Carolus Linnaeus was a Swedish botanist who formalized binomial nomenclature, the modern system of naming organisms. He is known as  The Father of Taxonomy. 
  • George Bentham was an English botanist whose classification of seed plants (Spermatophyta), based on an exhaustive study of all known species, served as a foundation for modern systems of vascular plant taxonomy.
So the correct option is 'Engler and Prantl'.

In flowering plants, meiosis takes place during?

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. Pollen grain formation

  2. Seed formation

  3. Gamete formation

  4. Seed germination

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Correct Option: C

Taxon is a unit of :

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. Species

  2. Order

  3. Genus

  4. Taxonomy

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Correct Option: D
Explanation:

Taxanomy is a scince of classifying living things according to their similarities and diferences.

Taxon is a group of one or more populations of an organism seen by taxonomists from a unit.

The modern classification of organisms is based on which of the following aspects?

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. Physiology

  2. Fossils

  3. Phylogeny

  4. Morphology

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Correct Option: C
Explanation:
  • Modern taxonomy is based on the hypotheses' of the evolutionary history of organisms, known as Phylogeny. As with the scientific method, scientists develop a hypothesis on the history of an animal and utilize modern science and technology to prove phylogeny.
  • With the advent of such fields of study as phylogenetics, cladistics, and systematics, the Linnaean system has progressed to a system of modern biological classification based on evolutionary relationships between organisms, both living and extinct.
  • So the correct option is 'phylogeny'.

A cladogram conveys information about ancestors and descendants of an organism

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. True

  2. False

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Correct Option: A
Explanation:
Cladogram is a diagrammatic representation of the hypothetical relationships between various animals in a phylogeny.  It helps to derive information regarding the common ancestors and descendants of an organism.
So, the correct answer is, 'True'.

State whether the following statement is true or false:
Plants have no sense organs.

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. True

  2. False

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Correct Option: A
Explanation:

Plants exhibit sensitivity and irritation but sensor organs are absent.

So, the statement is ‘True’.

The term taxonomy is introduced by

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. De Candolle

  2. Benthum and Hooker

  3. Linnaeus

  4. Huxley

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Correct Option: C
Explanation:

Ther term taxonomy is introduced by Carl Linnaeus. He is called as the father of taxonomy. He developed taxonomic hierarchy. It is also called as Linnaeus hierarchy. In it, domain is the highest rank followed by kingdom, phylum, class, order, family, genus, and species. Species is the lowest rank in the hierarchy. 

Thus, the correct answer is option C.

Artificial systems gave equal weightage to vegetative and sexual  characteristics; this is not acceptable because often ____ characters are more easily affected by environment. 

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. vegetative

  2. sexual

  3. anatomical

  4. physiological

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Correct Option: A
Explanation:

Artificial systems of classification were based upon vegetative and sexual characteristics, where both vegetative and sexual characteristics were given equal weightage. It was not acceptable because vegetative characters are more easily affected by environment.

______ classification systems were based on evolutionary relationships between various organisms. 

botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

  1. Natural

  2. Artificial

  3. Phylogenetic

  4. Both (a) and (b)

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Correct Option: C
Explanation:

Classification based on evolutionary relationships of organisms is called phylogenetic system of classification.