Biological Classification Test

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Biological Classification Test - 85

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Question 1
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Fungal bodies in which entire cell gets transformed into reproductive structure are know as:

A
Holocarpic

B
Eucarpic

C
Monocentric

D
Polycentric

Solution

Holocarpic is the condition in which the whole fungal body gets transformed into the reproductive structure (sporangium).
So, the correct answer is 'Holocarpic'.
Question 2
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Choose the correct statement.

A
All organisms of kingdom Fungi are not multicellular.

B
All organisms of kingdom Fungi are unicellular.

C
All organisms of kingdom Fungi prefer to grow in dry places.

D
All organisms of kingdom Fungi are autotrophs.
Solution
Correct Option: A
Explanation:
- Kingdom Fungi constitutes a bunch of heterotrophic organisms. The organisms opt to grow in heat and wet places.
- All organisms of the fungus kingdom don't seem to be unicellular. They are largely multicellular with an exception.
- Yeast could be a fungus that's unicellular. Hence, all organisms of the kingdom fungi are not multicellular.
Question 3
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Anabaena is an example for

A
Protista

B
Fungi

C
Bryophyte

D
Monera

Solution

Anabaena is a filamentous true cyanobacterium that has nitrogen-fixing capabilities. It is a member of kingdom Monera. So, the correct answer is 'Monera'.
Question 4
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Read the following statements regarding methanogens and select the correct option

i) They are included in the group Archaebacteria.
ii) They are responsible for the production of biogas in gobar gas plants.
iii) They live in hot sulphur springs.
iv) They are strictly anaerobic.

A
Statements (i) and (ii) are correct

B
Statements (i), (ii) and (iv) are correct

C
Statements (ii), (iii) and (iv) are correct

D
All statements are correct

Solution

Methanogens are microorganisms that produce methane as a metabolic byproduct in anaerobic conditions. They are prokaryotic and belong to the domain called Archea. Methanogens play a vital ecological role in anaerobic environments. Methanogens are also found in hot springs, submarine hypothermal vents. Methogens are responsible for the production of biogas in gobar gas plants.
So, the correct answer is 'All statements are correct'.
Question 5
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Which of the following statement about Mycoplasma is true?

A
They are smallest, disease causing thin walled organisms.

B
They differ from viruses in being cellular organization.

C
Insensitive to several antibiotics as they have 70S ribosomes.

D
They can survive without photosynthetic pigments and genetic material.

Solution

Mycoplasma are the smallest bacterial cells yet discovered. They lack a cell wall around their cell membranes. This characteristic makes them naturally resistant to many antibiotics such as penicillin and other beta-lactam antibiotics that target cell wall synthesis. They are pathogenic in humans, including Mycobacterial pneumoniae. They can survive without oxygen.
So, the correct answer is 'They are smallest, disease-causing thin walled organisms'.
Question 6
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Which of the following is Iron bacterium?

A
Beggiotoa

B
Geobacillus

C
Thiobacillus

D
None of these

Solution

Iron-oxidizing bacteria in surface water. Iron-oxidizing bacteria are chemotrophic bacteria that derive the energy they need to live and multiply by oxidizing dissolved ferrous iron. Iron-oxidizing bacteria colonize the transition zone where de-oxygenated water from an anaerobic environment flows into an aerobic environment. Iron-oxidizing bacteria use that oxygen to convert the soluble ferrous iron back into an insoluble reddish precipitate of ferric iron. Iron bacterium is Thiobacillus.
So the correct answer is 'Thiobacillus'.
Question 7
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The reproductive structure shown in figure is characteristic of which class of fungi?

A
Zygomycetes

B
Ascomycetes

C
Basidiomycetes

D
Deuteromycetes

Solution

The Zygomycota, or conjugation fungi, include molds, such as those that invade bread and other food products. The identifying characteristics of the Zygomycota are the formation of a zygospore during sexual reproduction and the lack of hyphal cell walls except in reproductive structures.
So, the correct option is 'Zygomycetes'.
Question 8
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Gram negative monerans lacking cell wall show reproduction by

A
Elementary bodies

B
Binary fission

C
Conidia formation

D
Endospore formation

Solution

Example of gram negative bacteria are Mycoplasma. They originated from gram positive bacteria but lost their walls and became gram negative.
They divide reproductively through elementary bodies. These bodies are formed by uneven division of the cell, in huge numbers and are present inside the mature cell.
Binary fission, Conidia formation and Endospore formation are other methods of reproduction but are not seen in Gram negative monerans lacking cell walls.
So the correct answer is ' Elementary bodies'.
Question 9
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The body of fungus is known as________

A
hypha

B
mycelium

C
rhizoid

D
fruiting body

Solution

A.Hypha – a filament of mycelium is called hypha.

B.mycelium – a network of filamentous structure that forms the body of fungus is called mycelium.

C.Rhizoid - root like hyphae appear in some fungi are called rhizoids.

D.Fruiting body – specialised structure formed after fertilizaiton in ascomyetis and basidiomycetis fungi is called fruiting body. It is made up of secondary mycelium.
So, the correct option is ‘mycelium’.
Question 10
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Select correct statement w.r.t. Monera:

A
All are unicellular and Gram negative.

B
They are precisely terrestrial.

C
They show the most extensive metabolic diversity.

D
They show intercellular transport by cyclosis.

Solution

The kingdom Monera includes all prokaryotes, which may be gram-positive or gram-negative bacteria. They have a simple structure but are complex in behavior. Intercellular transport by cyclosis is seen only in eukaryotes and hence is not found in monera. They have an extensive metabolic diversity and their mode of nutrition may be heterotrophic or autotrophic.
So, the correct option is 'Show the most extensive metabolic diversity.

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Biological Classification Test - 85

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Biological Classification Test - 85

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SHARING IS CARING

Question 1

Holocarpic

Eucarpic

Monocentric

Polycentric

Solution

Question 2

All organisms of kingdom Fungi are not multicellular.

All organisms of kingdom Fungi are unicellular.

All organisms of kingdom Fungi prefer to grow in dry places.

All organisms of kingdom Fungi are autotrophs.

Solution

Question 3

Protista

Fungi

Bryophyte

Monera

Solution

Question 4

Statements (i) and (ii) are correct

Statements (i), (ii) and (iv) are correct

Statements (ii), (iii) and (iv) are correct

All statements are correct

Solution

Question 5

They are smallest, disease causing thin walled organisms.

They differ from viruses in being cellular organization.

Insensitive to several antibiotics as they have 70S ribosomes.

They can survive without photosynthetic pigments and genetic material.

Solution

Question 6

Beggiotoa

Geobacillus

Thiobacillus

None of these

Solution

Question 7

Zygomycetes

Ascomycetes

Basidiomycetes

Deuteromycetes

Solution

Question 8

Elementary bodies

Binary fission

Conidia formation

Endospore formation

Solution

Question 9

hypha

mycelium

rhizoid

fruiting body

Solution

Question 10

All are unicellular and Gram negative.

They are precisely terrestrial.

They show the most extensive metabolic diversity.

They show intercellular transport by cyclosis.

Solution

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