Biological Classification Test

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Biological Classification Test - 79

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Question 1
1 / -0

Kingdom Plantae includes:

A
Thallophytes and bryophytes

B
Pteridophytes and gymnosperms

C
Angiosperms

D
All of these

Solution

Organisms of kingdom Plantae are multicellular eukaryotes with cell walls. They are autotrophs and use chlorophyll for photosynthesis. Thus, all plants are included in this group.
Kingdom Plantae is divided into five groups on the basis of:
1) Whether the plant body has well-differentiated, distinct parts.
2) Whether the differentiated plant body has special tissues for the transport of water and other substances.
3) Ability to bear seeds and also whether the seeds are enclosed within fruits or naked.
The five groups are:
1) Thallophyte
2) Bryophyta
3) Pteridophyta
4) Gymnosperms
5) Angiosperms
So, the correct option is D.
Question 2
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Which one of the following is an incorrect pair?

A
Louis Pasteur - Coined the term 'virus'

B
Beijerinck - Contagium vivum fluidum

C
lvanowsky - Discovered retroviruses

D
Stanley - Crystallised TMV
Solution
- Louis Pasteur coined the term virus before its discovery.
- Beijerinick called the virus "contagium vivum fluidum", living infectious fluid.
- Ivanowsky discovered the tobacco mosaic virus.
- Stanley crystallized the tobacco mosaic virus for the first time.
So, the correct answer is option C.
Question 3
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Select the incorrect statement.

A
Most plant viruses are RNA viruses.

B
Bacteriophages possess dsDNA.

C
Virus having an arthropod as vector is called as arbovirus.

D
Prions possess only nucleoid and no proteins.
Solution
Correct Answer: D
Explanation:
Prions are infectious proteins.
They are composed entirely of protein which folds to produce a specific structure.
They are responsible for a number of degenerative brain diseases, including mad cow disease.
They do not contain nucleoids.
Question 4
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Who crystallised and isolated viruses for the first time?

A
W.M. Stanley

B
K.M. Smith

C
D. Ivanowski

D
F.C. Bawden

Solution

Stanley first isolated and crystallized virus. he shared the Nobel Prize with Northrop.
So, the correct option is 'W.M. Stanley'.
Question 5
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Select the mismatched pair.

A
W.M. Stanley - Viruses could be crystallised

B
Meselson and Stahl - Coined term virus

C
M.W. Beijerinck - Extract of the infected plants of tobacco cause infection in healthy plants

D
All of these
Solution
answer:
Correct Answer: B
Explanation:
Virus are non-cellular organisms that are characterized by having inert crystalline structure and outer living cell.
This term virus was found by Dmitri Ivanowsky.
There were few scientists who researched on virus, like W.M.Stanley invented that virus could be crystallised and M.W.Beijerinck he extracted few infected tobacco plants and found that these infected plants infect the healthy plants also.
Hence, the mismatched pair is that the term Virus was found by Dmitri Ivanowsky and not by Meselson and Stahl.
Question 6
1 / -0

Read the given statements about lichens and select the incorrect ones.

(i) They represent an example of commensalism.
(ii) Algal partner obtains water and mineral salts from the fungus and the fungal partner obtains food prepared by the alga.
(iii) These do not grow in polluted areas.
(iv) The mycobiont is usually an ascomycetes or a basidiomycetes.
(v) The phycobiont is mostly a green alga or a cyanobacterium.
(vi) These constitute the pioneer community in the case of hydrosere.

A
(i) and (ii)

B
(v) and (vi)

C
(i) and (vi)

D
(i), (v) and (vi)

Solution

C. (i) and (vi)
Solution : In lichens, the algal partner obtains water and minerals from the fungus and the fungal partner obtains food prepared by the alga. So in this case, it is an example of mutualism rather than commensalism as both the organisms are getting benefit of this interaction. The pioneer community of hydrosere is phytoplanktons as hydrosere usually starts from a pond.
So the correct answer is "(i) and (vi)".
Question 7
1 / -0

Sexual reproduction in fungi is carried out by the fusion of compatible nuclei from two parents at a definite stage in the life cycle. Identify the different types of sexual reproduction occurring in fungi from the given figures and select the correct option.

A
P - Heterogamy, Q - Gametangial contact, R - Gametangial copulation, S - Spermatisation, T - Somatagamy

B
P - Planogametic copulation, Q - Gametangial copulation, R - Gametangial contact, S - Spermatogamy, T - HeterothaIfism

C
P - Planogametic copulation, Q - Gametangial contact, R - Gametangial copulation, S - Spermatisation, T - Somatogamy

D
P - Heterogamy, Q - Oogamy, R - Planogametic copulation, S - Conidiospores, T - Heterothallism
Question 8
1 / -0

Virion is

A
Nucleic acid of virus

B
Antiviral agent

C
Protein of virus

D
Completely assembled virus outside host
Solution
Correct Option: D
Explanation:
The infective form of a virus is a full viral particle made up of RNA or DNA and enclosed by a protein shell.
The virion's outer protein coat is known as the capsid.
Capsomeres are identical protein subunits that makeup virion capsids.
The virus's infectivity is conferred by the RNA or DNA at its inner core, while its specificity is provided by the capsid.
Hence, Virion is a completely assembled virus outside the host.
Question 9
1 / -0

The animals possessing the following type of germ layers (A and B) are called ________ and _________ respectively.

A
diploblastic, triploblastic

B
triploblastic, diploblastic

C
diploblastic, diploblastic

D
triploblastic, triploblastic

Solution

The animals possessing the following type of germ layers (A and B) are called 'diploblastic' and 'triploblastic' respectively. Diploblasts(A) lack the mesoderm.
Question 10
1 / -0

Contagium vivum fluidum was proposed by

A
D.J. Ivanowsky

B
M. W. Beijerinck

C
Stanley

D
Robert Hooke

Solution

Contagium vivum fluidum was an expression given by M. W. Beijerinck. initially used to portray an infection and underlined its capacity to sneak past the best work channels then accessible, giving it relatively fluid properties.
So, the correct option is 'M. W. Beijerinck'.

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Biological Classification Test - 79

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Biological Classification Test - 79

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SHARING IS CARING

Question 1

Thallophytes and bryophytes

Pteridophytes and gymnosperms

Angiosperms

All of these

Solution

Question 2

Louis Pasteur - Coined the term 'virus'

Beijerinck - Contagium vivum fluidum

lvanowsky - Discovered retroviruses

Stanley - Crystallised TMV

Solution

Question 3

Most plant viruses are RNA viruses.

Bacteriophages possess dsDNA.

Virus having an arthropod as vector is called as arbovirus.

Prions possess only nucleoid and no proteins.

Solution

Question 4

W.M. Stanley

K.M. Smith

D. Ivanowski

F.C. Bawden

Solution

Question 5

W.M. Stanley - Viruses could be crystallised

Meselson and Stahl - Coined term virus

M.W. Beijerinck - Extract of the infected plants of tobacco cause infection in healthy plants

All of these

Solution

Question 6

(i) and (ii)

(v) and (vi)

(i) and (vi)

(i), (v) and (vi)

Solution

Question 7

P - Heterogamy, Q - Gametangial contact, R - Gametangial copulation, S - Spermatisation, T - Somatagamy

P - Planogametic copulation, Q - Gametangial copulation, R - Gametangial contact, S - Spermatogamy, T - HeterothaIfism

P - Planogametic copulation, Q - Gametangial contact, R - Gametangial copulation, S - Spermatisation, T - Somatogamy

P - Heterogamy, Q - Oogamy, R - Planogametic copulation, S - Conidiospores, T - Heterothallism

Question 8

Nucleic acid of virus

Antiviral agent

Protein of virus

Completely assembled virus outside host

Solution

Question 9

diploblastic, triploblastic

triploblastic, diploblastic

diploblastic, diploblastic

triploblastic, triploblastic

Solution

Question 10

D.J. Ivanowsky

M. W. Beijerinck

Stanley

Robert Hooke

Solution

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