question_answer 17)

  Which one of these is not a eukaryote? (a) Euglena                         (b) Anabaena    (c) Spirogyra                       (d) Agaricus

Answer:

                  (b) In above question, Anabaena is the only organism that is not an eukaryote and onlypossess prokaryotic characteristic features, i.e., absence of membrane boundorganelles and undefined nucleus. Whereas, Euglena, Spirogyra and Agaricus are eukaryotes, possessing membranebound organelles as mitochondria and nucleus (well defined).