11th And 12th > Biology
THE LIVING WORLD MCQs
Total Questions : 75
| Page 1 of 8 pages
Answer: Option D. ->
Family
:
D
A group of genera having similar characters comprise a family. In biological classification, family is one of the eight major/obligate taxonomic ranks; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks above the rank of genus. In vernacular usage, a family may be named after one of its common members. e.g., Blattidae - The family of common household cockroaches (Blatta is a commonly seen genus of cockroach).
:
D
A group of genera having similar characters comprise a family. In biological classification, family is one of the eight major/obligate taxonomic ranks; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks above the rank of genus. In vernacular usage, a family may be named after one of its common members. e.g., Blattidae - The family of common household cockroaches (Blatta is a commonly seen genus of cockroach).
Answer: Option A. ->
Systematics
:
A
Study of different kinds of organisms, their diversity and the evolutionary relationships among them is called systematics. Approximately 8.7 million species of different living organisms have been identified since the application of this system and even today about 50 new organisms are being discovered on a daily basis.
:
A
Study of different kinds of organisms, their diversity and the evolutionary relationships among them is called systematics. Approximately 8.7 million species of different living organisms have been identified since the application of this system and even today about 50 new organisms are being discovered on a daily basis.
Answer: Option B. ->
The offspring is infertile
:
B
When members belonging to the same genus, but different species interbreed, they could produce a sterile/infertile offspring. The most well-known example is that of the mule, which is the product of a cross between a male donkey and a female horse. These belong to the same genus Equus, but different species.
:
B
When members belonging to the same genus, but different species interbreed, they could produce a sterile/infertile offspring. The most well-known example is that of the mule, which is the product of a cross between a male donkey and a female horse. These belong to the same genus Equus, but different species.
Answer: Option D. ->
Class
:
D
A herbarium is a store house of collected plant specimens that are dried, pressed and preserved on sheets. Further, these sheets are arranged according to a universally accepted system of classification. These specimens, along with their descriptions on herbarium sheets, become a storehouse or repository for future use. The herbarium sheets also carry a label providing information about date and place of collection, English, local and botanical names, family, collector’s name, etc. The class to which the plant belongs is generally not required for the herbarium sheet.
:
D
A herbarium is a store house of collected plant specimens that are dried, pressed and preserved on sheets. Further, these sheets are arranged according to a universally accepted system of classification. These specimens, along with their descriptions on herbarium sheets, become a storehouse or repository for future use. The herbarium sheets also carry a label providing information about date and place of collection, English, local and botanical names, family, collector’s name, etc. The class to which the plant belongs is generally not required for the herbarium sheet.
Answer: Option C. ->
Taxon
:
C
:
C
A group of organisms at any particular level in a classification system is called as Taxon. The taxon is the fundamental unit of taxonomic classification. The term taxon was coined by Adolf Meyer in 1926 for animals and H.J Lam used this term for plants in 1948.
Taxa are arranged in a hierarchy from kingdom to subspecies, a given taxon ordinarily including several taxa of lower rank. Species, genus and phylum are all specific examples of taxons that have been assigned
Answer: Option C. ->
Theria
:
C
Humans belong to Phylum Chordata because of the presence of an embryonic notochord. Since this notochord gets replaced with a vertebral column in the fully developed humans, they belong to subphylum Vertebrata. Further, since they have a jawline, they belong to Division Gnathostomata. This division is divided into two superclasses - Pisces (fin-bearers) and Tetrapoda (limb-bearers). Superclass Tetrapoda is sub-divided into 4 major classes - Amphibia, Reptilia, Aves, and Mammalia. Those limb-bearing vertebrates that nourish their young ones with mother's milk are grouped under the class Mammalia. Theria is a subclass to which humans and many other mammals belong.
:
C
Humans belong to Phylum Chordata because of the presence of an embryonic notochord. Since this notochord gets replaced with a vertebral column in the fully developed humans, they belong to subphylum Vertebrata. Further, since they have a jawline, they belong to Division Gnathostomata. This division is divided into two superclasses - Pisces (fin-bearers) and Tetrapoda (limb-bearers). Superclass Tetrapoda is sub-divided into 4 major classes - Amphibia, Reptilia, Aves, and Mammalia. Those limb-bearing vertebrates that nourish their young ones with mother's milk are grouped under the class Mammalia. Theria is a subclass to which humans and many other mammals belong.
Answer: Option C. ->
Collection of endemic and exotic living species
:
C
Botanical gardens and zoological parks are taxonomical aids, and have a collection of both endemic and exotic species of plants and animals respectively. Botanical gardens are specialised gardens that have collections of living plants for reference. Zoological parks are places where wild animals are kept in protected environments under human care, and which enable us to learn about their food habits and behaviour.
:
C
Botanical gardens and zoological parks are taxonomical aids, and have a collection of both endemic and exotic species of plants and animals respectively. Botanical gardens are specialised gardens that have collections of living plants for reference. Zoological parks are places where wild animals are kept in protected environments under human care, and which enable us to learn about their food habits and behaviour.
Answer: Option D. ->
Species
:
D
The major categories in taxonomy (in descending order) are Kingdom, Division or Phylum, Class, Order, Family, Genus, Species. Species is thus, the smallest group, while Kingdom is the largest. Thus, considering the characteristics in each of these taxa, the most general characters would apparently be found at the Kingdom level, while the most specific (or less general) characteristics would be seen at the species level. For example, characteristics of Kingdom Animalia would be very general, while the characteristics of a species under it, Homo sapiens, would be much more specific.
:
D
The major categories in taxonomy (in descending order) are Kingdom, Division or Phylum, Class, Order, Family, Genus, Species. Species is thus, the smallest group, while Kingdom is the largest. Thus, considering the characteristics in each of these taxa, the most general characters would apparently be found at the Kingdom level, while the most specific (or less general) characteristics would be seen at the species level. For example, characteristics of Kingdom Animalia would be very general, while the characteristics of a species under it, Homo sapiens, would be much more specific.
Answer: Option A. ->
This system was developed so that an organism has the same standard name used anywhere across the world
:
A and D
The system of providing a name with two components is called binomial nomenclature, as given by Carl Linnaeus. One of the main objectives of developing such a system was so that every organism would have the same standard name used anywhere across the world. Each name has two components - a generic name and a specific epithet. When typed, both the components of the name are italicised, with the first one capitalised as well.
:
A and D
The system of providing a name with two components is called binomial nomenclature, as given by Carl Linnaeus. One of the main objectives of developing such a system was so that every organism would have the same standard name used anywhere across the world. Each name has two components - a generic name and a specific epithet. When typed, both the components of the name are italicised, with the first one capitalised as well.
Answer: Option C. ->
Biodiversity
:
C
The number and types of organisms present on earth is known as biodiversity. In simple words, it refers to the variety of life.
:
C
The number and types of organisms present on earth is known as biodiversity. In simple words, it refers to the variety of life.
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