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Zoology MCQs for NEET — Practice Questions with Answers

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Which of the following is true about ribosomes

It’s a membraneless structure

70s and 80s are composed of 2 subunits

70s is also present in chloroplast

All of these

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Explanation

Refer NCERT, Heading 8.5.6, para 2, page 136

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Cytoskeleton comprises of

Microtubule

Microfilament

Intermediate filament

All of the these

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Explanation

Refer NCERT, Heading 8.5.7, para 2, page 136

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Cytoskeleton is made up of

Proteins

carbohydrates

lipids

All of these

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Explanation

Refer NCERT, Heading 8.5.7, para 2, page 136

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Cilia and flagella are

microtubule

microfilament

intermediate filament

Both A and B

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Explanation

Refer NCERT,Heading 8.5.8, para 1, page 137

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How many of the following structures are synthesised by microtubules?

Centrioles, basal body, cilia, flagella, spindle fibres

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Explanation

Refer NCERT, Heading 8.5.8, para 1,2,3 page 137 and para 1 of page 138, last line

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Which of the following is true about centrosome

membraneless organelle

contains two centrioles

surrounded by amorphous pericentriolar

All of these

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Explanation

Refer NCERT, Heading 8.5.9, para 1, page 137

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Which of the following is true about centrioles?

It lacks microtubule in the centre

Hub is proteinaceous

It forms the body of cilia or flagella and spindle fibres

All of the above

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Explanation

Refer NCERT, Heading 8.5.8, para 1, page 137

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In plant cell the concentration of ions is more in

cytoplasm

vacuoles

equal in both

nucleus

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Explanation

Refer NCERT, Heading 8.5.3.4, para 2, page 134

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The contractile vacuole

is present in Amoeba

helps in osmoregulation

helps in excretion

All of the above

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Explanation

Refer NCERT, Heading 8.5.3.4, para 3, page 134

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The membrane of vacuole is called

plasma membrane

tonoplast

cytoplasm

tunicates

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Explanation

Refer NCERT, Heading 8.5.3.4, para 1, page 134

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