ABHYAS | Self Learning | Testing Platform

Q.1

______________ of these organisms is prokaryotic.

A.

Algae

B.

Bacteria

C.

Nerve cells

D.

Amoeba

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Q.2

_______________ algae considered as ancestors of land plants.

A.

Brown algae

B.

Red algae

C.

Green algae

D.

Blue - green algae

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Q.3

The basic unit of classification is ________________

A.

Variety

B.

Species

C.

Genus

D.

Family

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Q.4

Palms, bamboo, grasses, sugarcane, rice, wheat are the examples of ___________________ .

A.

Angiosperm

B.

Dicotyledon

C.

Monocotyledon

D.

Both A and C.

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Q.5

Choose the correct definition of "fermentation" ?

A.

Microbes grow and produce toxic substance in our food.

B.

The process of conversion of sugar into alcohol

C.

Save food from the attack of microorganism

D.

The process of fixing nitrogen gas from the atmosphere and convert it into nitrogen compounds.

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Q.6

Lichen is a symbiotic association between _________ and ____________ .

A.

Algae and fungi

B.

Anabaena and algae

C.

Virus and fungi

D.

Amoebs and algae

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Q.7

The extra nuclear DNA in a bacteria cell contains genes for ___________________ .

A.

Sexuality

B.

Drug resistance

C.

Mortality

D.

Sexuality and drug resistance

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Q.8

Bacteria are used in experiments to study the effects of changing temperature on the growth of microbes instead of viruses because:

A.

Viruses cannot reproduce outside host

B.

Bacteria reproduce faster than viruses

C.

Viruses donot have cell wall

D.

Bacteria are larger than viruses

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Q.9

The term used to describe the interaction of organisms in lichen is ____________________ .

A.

Parasitism

B.

Mutualism

C.

Competition

D.

None of the above

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Q.10

___________________ algae lives in marine habitat.

A.

Spirogyra

B.

Ulothrix

C.

Gracilaria

D.

Cladophora

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Attention !!!!!