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Q. No.Diatomaceous earth is a result of accumulation of cell wall deposits of diatoms over
(1) Billions of years
(2) Millions of years
(3) Thousands of years
(4) Hundreds of years
(1) Billions of years
(2) Millions of years
(3) Thousands of years
(4) Hundreds of years
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following feature is not associated with diatoms?
(1) Chief producers of Earth
(2) Form diatomaceous earth which has gritty soil
(3) Gritty soil is used in filtration
(4) Gritty soil is used in polishing
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyRed tides in the sea are because of
(1) Red dinoflagellates
(2) Geladium
(3) Red Chrysophytes
(4) Red algae
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDinoflagellates- do not possess which feature?
(1) Marine and photosynthetic
(2) Variety in colors
(3) Cell wall with silica
(4) Two flagella
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDinoflagellates can not appear
(1) Black
(2) White
(3) More than one option is correct
(4) Pink
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following property belongs to Dinoflagellates?
(1) Loose cellulose plates in cell wall
(2) The outer surface has more loosening of cell wall than inner
(3) Rapid multiplication
(4) Not harmful for others
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not associated with red tides
(1) Harmful for marine organisms
(2) Gonyaulax
(3) Aquatic habitat
(4) Color is due to pigment in the cell of Dinoflagellates
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology…….of dinoflagellates have …..flagella …..lie in a furrow between wall plates
(1) All, 2, both
(2) Many, 3, trasverse falgella
(3) Most, 2, both
(4) All, 3, longitudinal flagella
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPellicle is found in
(1) Euglenoids
(2) Dinoflagellates
(3) Diatoms
(4) Eubacteria
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEuglenoids are not
(1) Mostly marine
(2) Have pellicle
(3) Lack cell wall
(4) Flexible body
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