Class Chondrichthyes, Elasmobranchii and Holocephali MCQs Quiz Online PDF Download

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MCQs on Class Chondrichthyes, Elasmobranchii and Holocephali Quiz PDF Download

MCQ. Pharyngeal slits in member of subclass 'Holocephali' is covered with

  1. Lid
  2. Lobe
  3. Operculum
  4. Jaws

C

MCQ. Sharks, ratfishes and rays are included in class

  1. Chordata
  2. Chondrichthyes
  3. Elasmobranchii
  4. Holocephali

B

MCQ. Sharks have a 'cartilaginous' structure and it may become

  1. Calcareous
  2. Partially ossified
  3. Completely ossified
  4. Lignified

B

MCQ. In members of subclass 'Holocephali' teethes are modified into

  1. Dentine
  2. Jaws
  3. Crushing plates
  4. Tail

C