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Classification of living beings - class-XI

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Three kingdom system was proposed by 

  1. Haeckel

  2. Whittaker

  3. Aristotle

  4. Mayer


Correct Option: A
Explanation:

In 1860s, the German investigator Ernst Haeckel proposed a three-kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista. 

In Vedic times, living organisms were classified into following number of classes

  1. 2

  2. 3

  3. 4

  4. 5


Correct Option: B
Explanation:

In Vedic times, the ;living organisms were divided into the following:

1. Born from the womb (Jivagi.)
2. Born from egg (Andaja.)
3. Born from sprouts (Udbhija.)

Hence, the correct answer is option B. 

Which of the following scientist created the group Protista for both unicellular plants and animals?

  1. Haeckel

  2. Pasteur

  3. Lister

  4. Koch


Correct Option: A
Explanation:

In the year 1866, Ernst Haeckel proposed the three kingdom classification. The three kingdoms are protista, plantae and animalia. The unicellular prokaryotic organisms were placed in the group of monera. This group includes the organisms which have chloroplast and resemble plants as well as the organisms which resemble animals. The group of protists are divided into two groups as plant-like protists and animal-like protists. 

Thus, the correct answer is option A. 

_________ is the branch of science dealing with identification, nomenclature and classification of organisms.

  1. Morphology

  2. Anatomy

  3. Ecology

  4. Taxonomy


Correct Option: D
Explanation:

Taxonomy (taxis-arrangement, nomos-law) is defined as the science dealing with identification, nomenclature and classification of organisms. The term taxonomy was given by de Candolle $(1813)$.

Among the following organisms which is a completely non-parasitic form?

  1. Sea anemone

  2. Tapeworm

  3. Leech

  4. Mosquito


Correct Option: A
Explanation:

Sea anemone is not parasitic It shows mutualism with hermit crab. Tapeworm is an endoparasite while leech and mosquito are exoparasites.

Water is the second most important factor influencing life of organisms because  

  1. it makes major part of an organism's body

  2. productivity of plants depend upon availability of water

  3. life on Earth originated in water

  4. Both (a) and (b)


Correct Option: D
Explanation:

Water makes the major part of an organism's life next to temperature. It s an important factor which influences the life of organisms. The productivity and distribution of land plants are dependent upon availability of water. Water is required for growth and development of plants. 

Organisms that can tolerate a wide range of salt concentration are termed as 

  1. stenosalline

  2. stenothalne

  3. euryhaine

  4. eurysaline


Correct Option: C
Explanation:

Euryhaline organisms are able to tolerate a wide range of salt concentration (or salinaties). E.g. Poecillia sphenops is a fishasdu that can live fresh water, brackish water or salt water. 

How many of these are correctly matched pairs?
A. Mycorhizae $\rightarrow + +$
B. Cattle egret & grazing cattle $\rightarrow + 0$
C. Cuckoo $\rightarrow$ Amensalism
D. Pisaster & Starfish.

  1. A, B, C are correct

  2. All are correct

  3. C & D are incorrect

  4. A, B, D are correct


Correct Option: D
Explanation:

Amensalism involves harm of one organism and unaffected another organism in a two organism relationship.

Cuckoo shows Commensalism by Brood Parasitism.
So, the correct option is 'A, B, D are correct'.

Heterotrichous thallus is shown by which organism

  1. Chlamydomonas

  2. Ectocarpus

  3. Spirogyra

  4. Volvax


Correct Option: B

Wuchereria hancrofti is carried by?

  1. Tse-tse fly

  2. Male Anopheles

  3. Culex mosquito

  4. Female Anopheles


Correct Option: A

Phenetic classification of organisms is based on?

  1. Observable characteristics of exiting organisms

  2. The ancestral lineage of existing organism

  3. Dendrogram based on DNA characteristics

  4. Sexual characteristics


Correct Option: A
Explanation:
  • Phenetics is an attempt to classify organisms based on overall similarity, usually by morphology or other observable traits, regardless of their phylogeny or evolutionary relation.
  • It includes various forms of clustering and ordination. Phenetic classification of organisms is based on measurable similarities and differences rather than genetic makeup and evolutionary descent. 
Thus, the correct answer is option A.

In jaundice, which organ is mainly affected ?

  1. liver

  2. kidney

  3. lungs

  4. brain.


Correct Option: A
Explanation:

Jaundice is a yellow discolouration of the skin, of whites of the eyes, indicating excess bilirubin (a bile pigment) in the blood. It is due to disease of the liver cells, such as hepatitis, when the liver is unable to utilize the bilirubin, which accumulates in the blood.

Organisms are classified into different kingdoms on the basis of 

  1. Reproduction

  2. Metabolism

  3. Cell structure

  4. All of the above


Correct Option: D
Explanation:

Living organism are classified on the basis of : Type of cell whether uni or  multi cellular, the way they reproduce, their genetic code, their growth and development, how do they metabolise, how do they respond to a stimulus, maintaining homeostasis and how do they evolve.

Moist vapour theory was given by

  1. Aristotle

  2. Pythagoras

  3. Delepatius

  4. Darwin


Correct Option: B
Explanation:
  • Moist vapour theory was proposed by a Greek philosopher Pythagoras.
  • According to this theory a certain moist vapour is transmitted from the male towards the female during the fertilization and it develops into an embryo.
  • From where the later new organism is developed.
  • Hence the correct option is B.

Soil humus theory of plant nourishment was given by

  1. Aristotle

  2. Liebig

  3. Von Helmont

  4. Ingen-Housz.


Correct Option: A

Organic compound first evolved on earth and required for origin of life were :

  1. Urea and amino acids

  2. Proteins and nucleic acids

  3. Proteins and amino acids

  4. Urea and nucleic acid


Correct Option: B
Explanation:
  • Proteins and nucleic acids are the two most basic compounds for the sustenance of life. 
  • Proteins provided a limiting membrane and boundary to primitive entities and nucleic acids were important information molecules, which were required to build self-replicating entities. Option B is correct

State whether the following statements are true or false.
Classification allows subsequent identification of a species

  1. True

  2. False


Correct Option: A
Explanation:

Classification helps orderly and hierarchical grouping of organisms into different taxa based on their similarities and differences and therefore helps in identification of species 

So, the correct answer is 'True'

Choose the correct answers from the alternatives given.
All of the following are true regarding systematics except that:

  1. it is the study of the diversity of organisms at all levels of organisation

  2. it is the specific study of identification, naming, and classification of organisms

  3. it relies on data from the fossil record, homology, and molecular data

  4. it utilises protein, DNA and RNA comparisons to determine relatedness of individuals


Correct Option: B

Which of the following is a drawback of four-kingdom classification given by Copeland?

  1. There was no separate kingdom for prokaryotes

  2. Fungi was included in plantae

  3. Fungi was included in animalia

  4. None of the above


Correct Option: B
Explanation:
Copeland proposed the four kingdom classification. He grouped all living organisms into four kingdoms, namely Kingdom Monera, Kingdom protista, Kingdom Metaphyta(Plantae) and Kingdom Metazoa(animalia).
He  included fungi in plantae despite being heterotrophic and having chitinous cell wall.
So, the correct option is 'Fungi was included in plantae'.

Initially, classification of living things was done as

  1. Plants

  2. Animals

  3. Monera

  4. Both A and B


Correct Option: D
Explanation:

The living organisms were classified into two kingdoms, plants and animals. The organisms which can perform photosynthesis and can prepare their own food were placed in kingdom Plantae. The organisms which are heterotrophic and can perform locomotion were placed in kingdom Animalia. 

Thus, the correct answer is option D. 

The two kingdom classification of Linnaeus is proved to be ineffective in the case of which of the following organism/s?

  1. Fungi

  2. Lichens

  3. Euglena

  4. All of the above


Correct Option: D
Explanation:

In the two-kingdom classification given by Linnaeus, all organisms were classified into plants and animals. This system, however, did not distinguish between eukaryotes and prokaryotes/unicellular and multicellular organisms/ photosynthetic and nonphotosynthetic organisms in which a large number of organisms did not fit. Lichens and fungi were classified under Plantae and euglena under Animalia.

So, the correct option is 'all of the above'.

Association in which both the organisms get benefited is __________________.

  1. Commensalism

  2. Mutualism

  3. Ammensalism

  4. Parasitism


Correct Option: B
Explanation:

Mutualism refers to ecological association between two organisms of different species which mutually get benefitted by their association. In commensalism, one organism gets benefitted and the other is neither benefitted nor harmed. In amensalism, one organism is destroyed and the other remains unaffected. In parasitism, one organism (parasite) lives inside other organism (host) and harms its host.

Correct answer is B.

The rose wood tree of India is

  1. Dalbergia sissoo

  2. Pinus roxburghii

  3. Tamarindus indica

  4. None of the above


Correct Option: A
Explanation:

Dalbergia sissoo or Rosewood tree is the native of the Indian subcontinent and southern Iran. It is an evergreen rosewood tree, also known as Sheesham, sisu, tahli, Tali. It is primarily found growing along river banks below 900 meters. The temperature in its native range averages 10–40 °C. It can withstand average annual rainfall up to 2,000 millimeters (79 in) and droughts of 3–4 months. Thus, the correct answer is option A.

Two kingdom classification was given by ________

  1. Linnaeus

  2. Mendel

  3. Whittaker

  4. None of these


Correct Option: A
Explanation:

According to the old classification which was given by linnaeus (1707 - 1778), The entire world of living organises nearly divided into two kingdoms. Kingdom plantae (including all plants) and kingdom animalia (including all animals).

The botanical name of Berseem (Egyptian clover) is

  1. Lens esculenta

  2. Crotolaria juncea

  3. Cyamopsis tetragonoloba

  4. Trifolium alexandrinum


Correct Option: D
Explanation:
Trifolium alexandrinum is the scientific name of Egyptian clover, also called as  berseem clover. It is an annual clover cultivated mostly in irrigated sub-tropical regions, and used as fodder, mainly for cattle and milk buffalo. It was an important winter crop in ancient Egypt and was introduced into northern India in the early nineteenth century.

The botanical name of 'Sanjeevani' is

  1. Selaginella utricularia

  2. Selaginella bryopteris

  3. Selaginella crotalaria

  4. None of the above


Correct Option: B
Explanation:

Selaginella bryopteris is commonly known as sanjeevini or sanjivini booti. It is a lithophytic plant. It is used medicinally in India. The popular name sanjeevani, which translates as "one that infuses life" derives from the medicinal properties. 

Sanjeevani grows on the hills of tropical areas, particularly the Arawali Mountain terrains from east to west in India. The dry plants have traditionally been used as a remedy for several human health complications for centuries in India, particularly by tribal peoples. Traditional uses include relief from heat stroke, dysuria, irregular menstruation and jaundice.

Which of the following is a drawback of two kingdom classification?

  1. Viruses have no protoplasm

  2. Fungi differ in structure and physiology 

  3. Lichens are dual organisms (Plants+Fungi)

  4. All of the above


Correct Option: D
Explanation:

Two kingdom classification have only two kingdoms Plantae and animalia. Which was not able to explain viruses, fungi and lichens etc. 

Two kingdom classification is the _______

  1. Most accepted one

  2. Oldest one

  3. Newest

  4. All of the above


Correct Option: B
Explanation:

According to the two kingdom classification which was given by Linnaeus the entire world of living organisms was divided into plantae and animalia i.e. plants and animals.

All eukaryotic unicellular organisms belong to

  1. Monera

  2. Protista

  3. Fungi

  4. Bacteria


Correct Option: B
Explanation:
Monera-Kingdom of prokaryotes. All eukaryotic unicellular organisms belong to protista.
So, the correct option is 'Protista'.

The classification system proposed by Linnaeus was a  _________ kingdom system of classification. 

  1. two

  2. three

  3. four

  4. five


Correct Option: A
Explanation:

Traditionally, all the organisms of the world used to be divided into two kingdoms, i.e, Plant kingdom and animal kingdom. This system was given by Linnaeus in the book Systema Naturae. As per this system of classification, photosynthetic organisms are included into the plant kingdom and non- photosynthetic in animal kingdom.

So the correct option is "Two".

Botanical name of tomato is

  1. Allium cepa

  2. Solanum tuberosum

  3. Saccharum officinarum

  4. Lycopersicon esculentum


Correct Option: D
Explanation:

Lycopersicon is a genus in the flowering plant family Solanaceae. The tomato is the edible, often red fruit/berry.
The onion (Allium cepa), also known as the bulb onion or common onion, is used as a vegetable and is the most widely cultivated species of the genus Allium.
The potato is a starchy, tuberous crop from the perennial nightshade, Solanum tuberosum. The word "potato" may refer either to the plant itself or, more commonly, the edible tuber.
Saccharum officinarum is sugarcane. It is a large, strong-growing species of grass in the genus Saccharum. It originated in southeast Asia and is now cultivated in tropical and subtropical countries worldwide for the production of sugar and other products.

He was one of the most renowned pupils of Plato. Plato called him 'The intelligence of the school'. Whom was he referring to?

  1. Aristotle

  2. Pytheas

  3. Theophrastus

  4. Strato


Correct Option: A
Explanation:

Aristotle was an ancient Greek philosopher and scientist, one of the greatest intellectual figures of Western history. He was the author of a philosophical and scientific system that became the framework and vehicle for both Christian Scholasticism and medieval Islamic philosophy. Even after the intellectual revolutions of the Renaissance, the Reformation, and the Enlightenment, Aristotelian concepts remained embedded in Western thinking.Aristotle’s intellectual range was vast, covering most of the sciences and many of the arts, including biology, botany, chemistry, ethics, history, logic, zoology, etc. He was the founder of formal logic, devising for it a finished system that for centuries was regarded as the sum of the discipline; and he pioneered the study of zoology, both observational and theoretical, in which some of his work remained unsurpassed until the 19th century. But he is, of course, most outstanding as a philosopher. His writings in ethics and political theory as well as in metaphysics and the philosophy of science continue to be studied, and his work remains a powerful current in contemporary philosophical debate. Aristotle was born on the Chalcidice peninsula of Macedonia, in northern Greece. After his father’s death in 367, Aristotle migrated to Athens, where he joined the Academy of Plato (c. 428–c. 348 BCE). He remained there for 20 years as Plato’s pupil and colleague.

So the correct option is 'Aristotle'.

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