Tag: classification of biodiversity

Questions Related to classification of biodiversity

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

Show answer
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

Show answer
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.

The accumulation of non-biodegradable substances in a food chain in increasing amount at each higher trophic level is known as _____________.

botany taxonomy and systematic botany plant taxonomy taxonomy and systematics classification of biodiversity

  1. Accumulation

  2. Eutrophication

  3. Pollution

  4. Bio magnification

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Correct Option: D
Explanation:

The increase in concentration of non-biodegradable substance with subsequent trophic level of a food chain is called bio-magnification.

Bentham and Hooker's system of classification is published in the book

botany plant taxonomy taxonomy and systematics taxonomy and systematic botany classification of biodiversity

  1. Genera Plantarum

  2. Species Plantarum

  3. Phylum Plantarum

  4. None of the above

Show answer
Correct Option: A
Explanation:

Bentham and Hooker's system of classification is published in the book Genera Plantarum. It was published in 3 volumes from the year 1862 to 1883. It is a natural system of classification. In this book, they arranged the species according to the system. They grouped 97,205 species of flowering plants into 202 orders.

Thus, the correct answer is 'Genera Plantarum.'