Red tides in the sea are because of

  1. Red dinoflagellates
  2. Geladium
  3. Red Chrysophytes
  4. Red algae
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Dinoflagellates- 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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Dinoflagellates can not appear

  1. Black
  2. White
  3. More than one option is correct
  4. Pink
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Which 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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Which 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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…….of them 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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Pellicle is found in

  1. Euglenoids
  2. Dinoflagellates
  3. Diatoms
  4. Eubacteria
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Euglenoids are not

  1. Mostly marine
  2. Have pellicle
  3. Lack cell wall
  4. Flexible body
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The flagella in euglenoids are

  1. Two, longitudinal and transverse
  2. Two, long and short
  3. Three, two long and one short
  4. Three, two longitudinal and one transverse
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Euglenoids do not possess this feature-

  1. Always photosynthetic
  2. Pigments like higher plants
  3. Pellicle provides flexibility
  4. Found in stagnant water
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