9th Class Science Diversity in Living Organisms

  • question_answer 55)
      Well defined nucleus is absent in (a) blue-green algae       (b) diatoms                         (c) algae                               (d) yeast

    Answer:

      (a) Blue-green algae or cyanobacteria is a prokaryotic organism, i.e., it lacks well defined nucleus, whereas diatoms, algae and yeast all are eukaryotic organism, i.e., they show the presence of true nucleus and cell membrane bound organelles.


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