Biological Classification Test

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Biological Classification Test - 16

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is true for viruses?

A
They invariably contain DNA

B
They multiply only inside the host cell

C
They occur only inside bacteria

D
Their genetic material is RNA

Solution

a) Virus mostly has RNA as genetic material. But some of the virus like herpes virus has DNA as genetic material.
b) Viruses multiply inside the host cell. They inject the genetic material into the host cell and replicate themselves with the help of host machinery.
c) The virus exists as non- living outside the cell and they are living inside the cell. The viruses which infect the bacteria are known as bacteriophages.
d) Viruses like herpes also contain DNA but mostly virus contains RNA as their genetic material.
So, the correct answer is option B.
Question 2
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Proteins of capsomeres are made up of

A
Nucleic acids

B
Carbohydrates

C
Fats

D
Amino acids

Solution

Capsomeres are protein units that are aggregated together to form the capsid. It is the protein coat that encloses nucleic acid, either DNA or RNA in virus. Since proteins are polymers made up of amino acids, joined together by peptide bonds. Capsomeres are made of amino acid.
Example, TMV or Tobacco Mosaic Virus, where ssRNA is enclosed by spirally arranged capsomeres
So, the correct answer is 'Amino acids'
Question 3
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Food is stored in Rhizopus/Mucor as

A
Protein and steriods

B
Sugar and oil

C
Protein and starch

D
Glycogen and oil

Solution

Fungi usually store their food as glycogen, like that of animals. Rhizopus have storage of food in the form of both glycogen and oil. Plants and algae store their food in the form of starch.
Thus, the correct answer is option D.
Question 4
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The viruses contain

A
Proteins only

B
DNA only

C
Nucleic acids only

D
Proteins, DNA or RNA (nucleic acids)

Solution

Viruses are ultramicroscopic and can cause diseases in plants and animals. They are very simple in their structure. They are composed of nucleic acid surrounded by a protein coat. The nucleic acid can be either RNA or DNA, but never both.
Question 5
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Which of the following is the smallest virus?

A
Foot and mouth virus

B
Tobacco mosaic virus

C
Coliphage lambda virus

D
Wound tumor virus

Solution

We find a wide variety of viruses, while the smallest virus is the one causing foot and mouth disease, also called as FMDV. The disease caused by the airborne virus is very highly communicable transmitting up to many kilometers but virus is as small as 0.008 to 0.012 microns.
Question 6
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On the basis of attack of host, viruses are classified into

A
Two types

B
Three types

C
Four types

D
Five types

Solution

On the basis of a host infected, three important virus types are the animal virus, plant virus and bacterial virus or bacteriophages. Several other types of viruses have been discovered with a wide range of hosts, like cyanophages (infecting cyanobacteria), mycophages (infecting fungi), zymophages (infecting yeast), phycophages (infecting algae) etc.
Question 7
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Who discovered virus?

A
Miller

B
Ivanovsky

C
Herelle

D
Mendel

Solution

Dmitri Ivanovsky reported in 1892 that sap from a diseased tobacco plant remained infectious to healthy tobacco plants despite having been filtered.
Then, in 1898, Martinus Beijerinck called the filtered, infectious substance a virus.
Hence option B is correct.
Question 8
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Rhizopus belongs to

A
Zygomycetes

B
Basidiomycetes

C
Ascomycetes

D
Deuteromycetes

Solution

Rhizopus belong to a large group of fungi called as Zygomycetes. They are called as true fungi as they grow in soil and on fruits and decaying organic materials. They have well-developed mycelium with chitin in their cell walls
So, the correct answer is 'Zygomycetes'
Question 9
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The pathogen Microsporum responsible for ringworm disease in humans belongs to the same Kingdom of organisms as that of

A
Rhizopus, a mould

B
Ascaris, a round worm

C
Taenia, a tapeworm

D
Wuchereria, a filarial worm

Solution

Ringworm is a fungal infection that invades the hair and hair follicles. Most cases are caused by Microsporum canis (Ascomycetes-Fungi). Rhizopus is a mould belongs to Zygomycetes of kingdom Fungi.
Thus, the correct answer is option A.
Question 10
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In Rhizopus, hyphae are

A
Branched, septate and antinuclear

B
Branched, aseptate and multi nucleate

C
Unbranched, aseptate and multi nucleate

D
Unbranched, septate and coenocytic

Solution

Rhizopus is a non- septate fungi, where there are no cross striations. Thus, the cytoplasmic streaming is not restricted to a great extent. Cytoplasm streams inside the hyphae. Hyphae is branched in nature. When there are no separating walls, it makes the hyphae multinucleate.
Therefore, the correct answer is option B.

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Re-Attempt Weekly Quiz Competition

Biological Classification Test - 16

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Biological Classification Test - 16

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SHARING IS CARING

Question 1

They invariably contain DNA

They multiply only inside the host cell

They occur only inside bacteria

Their genetic material is RNA

Solution

Question 2

Nucleic acids

Carbohydrates

Fats

Amino acids

Solution

Question 3

Protein and steriods

Sugar and oil

Protein and starch

Glycogen and oil

Solution

Question 4

Proteins only

DNA only

Nucleic acids only

Proteins, DNA or RNA (nucleic acids)

Solution

Question 5

Foot and mouth virus

Tobacco mosaic virus

Coliphage lambda virus

Wound tumor virus

Solution

Question 6

Two types

Three types

Four types

Five types

Solution

Question 7

Miller

Ivanovsky

Herelle

Mendel

Solution

Question 8

Zygomycetes

Basidiomycetes

Ascomycetes

Deuteromycetes

Solution

Question 9

Rhizopus, a mould

Ascaris, a round worm

Taenia, a tapeworm

Wuchereria, a filarial worm

Solution

Question 10

Branched, septate and antinuclear

Branched, aseptate and multi nucleate

Unbranched, aseptate and multi nucleate

Unbranched, septate and coenocytic

Solution

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