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Coelenterates (Class - XI)

Classification, anatomy, and life forms of coelenterates including hydra, jellyfish, and coral polyps

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

In which class of coelenterates are true jellyfish found?

  1. Hydrozoa
  2. Scyphozoa
  3. Anthozoa
  4. Cubzoa
Question 2 Multiple Choice (Single Answer)

Which class of coelenterates exists only in polyp form?

  1. Hydrozoa
  2. Scyphozoa
  3. Anthozoa
  4. Cubozoa
Question 3 Multiple Choice (Single Answer)

What is the morphism of hydra called?

  1. Dimorphism
  2. Trimorphism
  3. Polymorphism
  4. Monomorphism
Question 4 Multiple Choice (Single Answer)

Which coelenterate is known as Portuguese man of war?

  1. Aurelia
  2. Physalia
  3. Obelia
  4. Velella
Question 5 Multiple Choice (Single Answer)

In which coelenterate are bladder-like pnumatophores found?

  1. Aurelia
  2. Obelia
  3. Physalia
  4. Palegia
Question 6 Multiple Choice (Single Answer)

Which coelenterate posseses hydrorhiza and hydrocauli filaments?

  1. Aurelia
  2. Obelia
  3. Hydra
  4. Physalia
Question 7 Multiple Choice (Single Answer)

Which kind of zooids are responsible for capturing prey?

  1. Gonozooids
  2. Dactylozooids
  3. Gastrozooids
  4. Tentaculozooids
Question 8 Multiple Choice (Single Answer)

Which of the following entities form(s) coral reefs?

  1. Medusa
  2. Polyp
  3. Sponges
  4. Protists
Question 9 Multiple Choice (Single Answer)

Which of the following classes of coelenterates form(s) corals?

  1. Hydrozoa
  2. Scyphozoa
  3. Anthozoa
  4. All of the above
Question 10 Multiple Choice (Single Answer)

Which of the following is/are freshwater polyp(s)?

  1. Obelia
  2. Hydra
  3. Metridium
  4. Aurelia
Question 11 Multiple Choice (Single Answer)

In which organism are nectophores located at the apical end of the body?

  1. Physalia
  2. Diphyes
  3. Velella
  4. Porpita
Question 12 Multiple Choice (Single Answer)

Which of the following organs act(s) as an organ of defence in coelenterates?

  1. Nematocysts
  2. Palcopils
  3. Hydrocauli
  4. Tentacles
Question 13 Multiple Choice (Single Answer)

Which layer is called gastroderm layer of coelenterates?

  1. Outer layer
  2. Middle layer
  3. Inner layer
  4. Lining of heart
Question 14 Multiple Choice (Single Answer)

What is the cavity found in the body of coelenterates called?

  1. Osculum
  2. Velum
  3. Lenteron
  4. Medusa
Question 15 Multiple Choice (Single Answer)

What is the larval form of coelenterates called?

  1. Zoea
  2. Naupilus
  3. Planula
  4. Parva
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