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Botany NEET Questions — Free MCQ Practice

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Information on any one taxon can be taken out by

A. Monographs B. Catalogues C. Flora D. Manuals

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Explanation

NCERT page nmber-14

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For the identification of the name of species found in an area, one would use

A. Manuals B. Catalogues C. Monographs. D. Museum

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Explanation

NCERT page nmber-14

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In five kingdom classification, which single kingdom contains blue-green algae, nitrogen fixing bacteria and methanogenic archaebacteria

A.

Monera

B.

Protista

C.

Plantae

D.

Fungi

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Explanation

The five kingdom system proposedby R.H. Whittaker (1969).

The five kingdoms are: Monere, Protista, Fungi, Plantae, Animalia.

According to this:-

Monera contains:- All Unicellular prokaryotic organisms (Autotrophic & Heterotrophic), Monera includes all types of bacteria - blue green algae (cyanobacteria), nitrogen fixing bacteria, methanogenic archebacteria.

Protista contains:- Unicellur eukaryotic organisms.

Plantae contains:- All eukaryotic chlorophyll containing organisms (algae, bryophytes, pteridophytes, gymnosperms, angiosperms)

Fungi contains:- All fungi (achlorophyllous, eukaryotic, heterotrophic,spore producing, thalloid body).

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In five-kingdom classification, unicellular green algae are included in the kingdom

A.

Metaphyta

B.

Protista

C.

Monera

D.

Metazoa

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Explanation

According to NCERT Book (Chapter: Biological Classification, Page No. 18), Chlamydomonas & Chlorella (Examples of Unicellular green algae) are in Kingdom Protista as both are unicellular and eukaryotic.

Please note that Blue Green Algae(Cyanobacteria) is in Kingdom Monera. (prokaryotic)

Multicellular algae are in Kingdom Plantae(Metaphyta).

So, Algae are present in three kingdoms in 5 kingdom classification.

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Fungi usually store the reserve food material in the form of

A.

Starch

B.

Glycogen and oil

C.

Lipid

D.

Protein

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Explanation

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Saprophytic protists are:

A.

Slime moulds

B.

Dinoflagellates

C.

Chrysophytes

D.

Protozonas

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Explanation

Factual.

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The domain Archaea is not characterized by:

A.

Pseudopeptidoglycan in cell wall

B.

Linear chromosomes

C.

Introns present is some genes

D.

Methanogeneisis as unique metabolism

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Explanation

Archaebacteria have circular chromosome

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Cells in some filamentous cynobacteria that are speciallized for nitrogen fixation are called:

A.

Phycobilisomes

B.

Chromatophores

C.

Grana

D.

Heterocysts

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Explanation

In some filamentous cyanobacteria, specialized cells called heterocysts are responsible for nitrogen fixation. Heterocysts provide anaerobic conditions necessary for the nitrogen-fixing enzyme nitrogenase to function efficiently.

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Which of the following are found in extreme saline conditions?

A.

Archaebacteria

B.

Eubacteria

C.

Cyanobacteria

D.

Mycobacteria

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Explanation

Archaebacteria are the most primitive form of bacteria. These live in diverse habitat, e.g. extreme hot temperature, saline condition, variable pH, etc. Saline bacteria are called Halophiles (e.g., Halobacterium, Halococcus).

Concept Enhancer: The ability of archaebacteria to survive in harsh conditions is due to the presence of branched lipid chain in their membrane, which reduces the fluidity of their membrane.

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Viroids differ from viruses in having

A.

DNA molecules with protein coat

B.

DNA molecules without protein coat

C.

RNA molecules with protein coat

D.

RNA molecules without protein coat

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Explanation

Viroids are infectious agents composed solely of a small, single-stranded, circular RNA molecule without a protein coat. They are the smallest known infectious pathogens, smaller than viruses, and can cause plant diseases.

Botany MCQs for NEET — Practice Questions with Answers

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