The Living World Test

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The Living World Test - 16

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Weekly Quiz Competition

Question 1

1 / -0

Match the items given in Column I with those in Column II and select the correct option given below:

	Column I		Column II
a	Herbarium	i	It is a place having a collection of preserved plants and animals.
b	Key	ii	A list that enumerates methodically all the species found in an area with brief description aiding identification.
c	Museum	iii	Is a place where dried and pressed plant specimens mounted on sheets are kept.
d	Catalogue	iv	A booklet containing a list of characters and their alternates which are helpful in identification of various taxa.

a-ii, b-iv, c-iii, d-i

a-i, b-iv, c-iii, d-ii

a-iii, b-iv, c-i, d-ii

a-iii, b-ii, c-i, d-iv

Solution

a) The herbarium is a tool to study taxonomy. It is a place where dried and pressed plant parts are preserved on a sheet. It gives information of common and botanical name, taxonomy etc.

b) Key is the taxonomical aid that helps in identification of various taxa on the basis of similarity and dissimilarities.

c) A museum is a place where both animals and plants are preserved for future study.

d) A catalogue is the list of all species that found in an area with a brief description. It is used for identification of species. Thus, the correct answer is option C.

Question 2
1 / -0

The taxon which includes related species is?

A
Class

B
Order

C
Family

D
Genus

Solution

Genus comprises a group of related species which has more characters in common in comparison to species of other genera. In the other words, genera are aggregates of closely related species. For example, potato and brinjal are two different species but both belong to the genus Solanum.
Thus the correct answer is option D.
Question 3
1 / -0

Which category lies in between the genus and order in the classification of plants?

A
Species

B
Class

C
Family

D
Kingdom

Solution

There are different categories which are used for hierarchical classification of the organisms. The sequence of the classification is the kingdom, division/phylum, class, order, family, genus and species. The family is the category which lies in between the genus and order in the classification of the plants.
Thus, the correct answer is option C.
Question 4
1 / -0

'Taxa' differs from 'taxon':

A
Taxa is a higher taxonomic category than taxon.

B
Taxa is lower taxonomic category than taxon.

C
Taxa is the plural of taxon.

D
Taxa is the singular of taxon.

Solution

A taxon is a taxonomic category of any level.
Taxa is the plural form of a taxon.
Question 5
1 / -0

First life on earth was

A
Chemoautotrophs

B
Autotrophs

C
Photoautotrophs

D
None of these
Solution
- Life began on earth some 3.8 million years ago and was initially occupied by the single-celled prokaryotic cells, such as bacteria. Multicellular organisms evolved over a billion years later.
- However, studies conducted on the genetic material suggest that single-celled living organisms that used carbon dioxide as a source of carbon and oxidized inorganic materials to extract energy were the first forms of life on earth.
- These organisms are called chemoautotrophs.
So, the correct answer is option A.
Question 6
1 / -0

Which of the following is an example of taxon?

A
Genera

B
Family

C
Class

D
All of the above

Solution

A taxon is a group of organisms those come under particular classification category, e.g., all the mammals come under class taxon Mammalia. The genera, family and the class are the examples of the taxon.
Thus, the correct answer is option D.
Question 7
1 / -0

Class is present between

A
Kingdom and phylum

B
Phylum and order

C
Order and family

D
Family and genus

Solution

In biological classification, rank is the relative position in a hierarchy. There are seven main ranks defined by the international nomenclature codes, kingdom, phylum/division, class, order, family, genus, species. Class is a taxonomic rank below phylum and above order. The composition of each class is determined by a taxonomist.
Question 8
1 / -0

In taxonomic hierarchy, family comes between

A
Class and Order

B
Order and Genus

C
Genus and Species

D
Division and Class

Solution

In biological classification, living organisms are arranged in taxonomic ranks in a hierarchy ascending as follows;
Species --> genus --> family --> order --> class --> phylum --> kingdom --> domain.
Question 9
1 / -0

The system of giving one name to the individual is called as

A
Quasibinomial system

B
Semibinomial system

C
Mononoial system

D
Uninomial system

Solution

Vernacular names are usually single word names and are thus they are called as the uninominal system. They are based on some minor or major characteristics of organisms e.g., Dodhak (after milky latex). They are mostly brief and are easy to pronounce, remember. Thus, the correct answer is option D.
Question 10
1 / -0

Binomial nomenclature means writing the name of plant / animal in two words, which designate

A
Genus and species

B
Species and variety

C
Order and family

D
Family and genus

Solution

Binomial nomenclature is the system of nomenclature in which each species of animal or plant receives a name of two terms of which the first identifies the genus to which it belongs and the second the species itself. The genus is capitalized and species is in lowercase, both written in italics. Both the terms are in latin grammatical forms, although they can be based on words from other languages. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, in his work Species Plantarum in 1753. The application of binomial nomenclature is now governed by various internationally agreed codes of rules, of which the two most important are the International Code of Zoological Nomenclature (ICZN) for animals and the International Code of Zoological Nomenclature for algae, fungi and plants (ICN) for plants.
Hence, the answer is - 'Genus and species'.

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The Living World Test - 16

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The Living World Test - 16

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Question 1

a-ii, b-iv, c-iii, d-i

a-i, b-iv, c-iii, d-ii

a-iii, b-iv, c-i, d-ii

a-iii, b-ii, c-i, d-iv

Solution

Question 2

Class

Order

Family

Genus

Solution

Question 3

Species

Class

Family

Kingdom

Solution

Question 4

Taxa is a higher taxonomic category than taxon.

Taxa is lower taxonomic category than taxon.

Taxa is the plural of taxon.

Taxa is the singular of taxon.

Solution

Question 5

Chemoautotrophs

Autotrophs

Photoautotrophs

None of these

Solution

Question 6

Genera

Family

Class

All of the above

Solution

Question 7

Kingdom and phylum

Phylum and order

Order and family

Family and genus

Solution

Question 8

Class and Order

Order and Genus

Genus and Species

Division and Class

Solution

Question 9

Quasibinomial system

Semibinomial system

Mononoial system

Uninomial system

Solution

Question 10

Genus and species

Species and variety

Order and family

Family and genus

Solution

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