Tag: biology

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Multiple choice biology micro organisms non cellular organism : virus world of virus bacteria - introduction, shape and structure

Cryptogram of a virus (Gibbs and Harrison 1968) has $4$ pairs of symbols to be used in virus classification. The pair $1$ indicates

  1. Type of nucleic acid in virus/ structure of nucleic acid

  2. Molecular weight of nucleic acid/ percentage of nucleic acid

  3. Shape of virus particle/ shape of capsid

  4. Kind of host infected/ kind of vector
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Cryptogram code is proposed by Gibbs and Harrison (1968) to describe the virus. The code consists of 4 pairs of symbols. 
The first pair indicates- The type of nucleic acid/number of strands in the particular nucleic acids. For example cryptogram of Poliovirus is written as R/l: 2.5/30: S/S: V/O.
So, the correct answer is option A, Type of nucleic acid in virus/ structure of nucleic acid. 
Multiple choice biology micro organisms non cellular organism : virus world of virus bacteria - introduction, shape and structure

The latest view for the origin of viruses is?

  1. They have arisen from nucleic acid and proteins found in primitive soup

  2. They arose from bacteria as a result of the loss of the cell, ribosome etc

  3. They arose from some bacteria, which has developed a nucleus only

  4. They are modified plasmids, which are in-fact the fragments of the nucleic acids of host
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The current scientific consensus suggests that viruses may have originated from primitive nucleic acid and protein molecules that evolved to become self-replicating entities.

Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

ICBN is

  1. International Code of Botanical Naming

  2. International Code of Botanical Nomenclature

  3. International Class of Botanical Nomenclature

  4. International Classification of Botanical Nomenclature
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • ICBN stands for - International Code of Botanical Nomenclature. 
  • It is the set of rules and recommendations for naming plants, fungi, and algae as the ICBN applies not only to plants, as they are now defined, but also to other organisms traditionally studied by botanists.
So, the correct option is 'International Code of Botanical Nomenclature'.

Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Binomial nomenclature was introduced by :

  1. John Ray

  2. Aristotle

  3. A.P. Decandolle

  4. Carlous Linnaeus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Carlous Linnaeus is also known as 'Father of modern taxonomy' for introducing the artificial classification system and binomial nomenclature.
  • The term 'species' was coined by Jonh Ray.
  • Father of Biology is Aristotle.
  • A.P. Decandolle introduced the term 'taxonomy'.
Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

The scientific name of mango is written as Mangifera indica L. Pickup the correct statement about the significance of letter 'L'.

  1. Letter 'L' singnifies Latin language.

  2. The name is reverse with indica preceding Mangifera.

  3. Letter 'L' signifies the taxonomist, Linnaeus.

  4. Letter 'L' is superfluous.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carl Linnaeus was a Swedish botanist, physician and zoologist, who laid the foundations for the mordern biological naming scheme of biological nomenclature. He is known as the father of taxonomy and is also considered one of the fathers of modern ecology. In botany, the author abbreviation used to indicate Linnaeus as the authority for species name. In older publications, sometimes the abbreviation "Linn" is found.

Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Scientific name of plants are mostly derived from which of the following language?

  1. Greek

  2. French

  3. Sanskrit

  4. Latin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Scientific names are used as means of classifying or identifying scientific plants. At the time when biologist Carl Linnaeus published books of binomial nomenclature, Latin was used in western Europe as the common language of science and scientific names were in Latin or Greek. Linnaeus continued this practice. 

Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

How many of the given features are associated with binomial nomenclature? 


Descriptive name, Generic epithet, Specific epithet, Latin language, Names of subspecies or variety should be italicised or underlines.

  1. 4

  2. 3

  3. 2

  4. 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Binomial nomenclature involves a generic epithet, a specific epithet, Latin language usage, and specific formatting rules like italics or underlining. All four listed features are standard components of the system.

Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Plant nomenclature means

  1. To give names to plants without any rules.

  2. Nomenclature of plants under the international rules.

  3. Nomenclature of plants in local language.

  4. Nomenclature of plants in English language.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nomenclature is application of correct name to plants and taxonomic rank under the rule as drawn by ICBN (International Code for Botanical Nomenclature); option A is incorrect and B is correct. Scientific names formulated in Latin language are preferred over those in vernacular languages due to restricted use and application of these names in one or two languages and non-availability of vernacular names for all known plant species; this makes option C incorrect. Scientific names are not formulated in English but in Latin because latter one is a dead language and the meanings of words are not prone to changes as is the case with English; this makes option D incorrect. Thus, the correct answer is option B.