Online MCQS test of phylum cnidaria set 1By biochemistzeshan@gmail.com / July 27, 2024 Quiz 1 / 10 Which cnidarian has a mutualistic relationship with clownfish? Jellyfish Sea anemone Coral Portuguese man o' war 2 / 10 Which cnidarian class can form symbiotic relationships with fish and other marine animals? Hydrozoa Scyphozoa Anthozoa Cubozoa 3 / 10 The nerve net in cnidarians is responsible for: Coordinated movement Hormonal regulation ensory perception Basic response to stimuli 4 / 10 Which cnidarian class includes the sea anemones? Hydrozoa Scyphozoa Anthozoa Cubozoa 5 / 10 What is the primary habitat of cnidarians? Terrestrial Freshwater Marine Aerial 6 / 10 Which cnidarian class has organisms with a thick mesoglea layer? Hydrozoa Scyphozoa Anthozoa Cubozoa 7 / 10 What is the role of the nerve net in cnidarians? Central coordination Digestion Basic response to stimuli Circulation 8 / 10 Which class of cnidarians includes the lion's mane jellyfish? Hydrozoa Scyphozoa Anthozoa Cubozoa 9 / 10 What type of cells do cnidarians use to capture their prey? Choanocytes Cnidocytes Spicules Amoebocytes 10 / 10 The single opening in the gastrovascular cavity of cnidarians serves as: Mouth only Anus only oth mouth and anus Neither Your score isThe average score is 0% 0% Restart quiz Online MCQS test of phylum cnidaria set 2 Quiz 1 / 10 In which cnidarian class do the organisms exhibit complex behaviors and potent venom? Aurelia Hydra Physalia Chironex 2 / 10 Which class of cnidarians includes the moon jellyfish? Hydrozoa Scyphozoa Anthozoa Cubozoa 3 / 10 Coral reefs are primarily built by which type of cnidarians? Hydrozoans Scyphozoans Anthozoans Cubozoans 4 / 10 Which cnidarian class has a life cycle dominated by the medusa form? Hydrozoa Scyphozoa Anthozoa Cubozoa 5 / 10 What kind of cells are unique to cnidarians? Choanocytes Cnidocytes Spicules Amoebocytes 6 / 10 Which layer in cnidarians is non-cellular and gelatinous? Ectoderm Endoderm Mesoglea Mesoderm 7 / 10 What is the primary function of nematocysts in cnidarians? Respiration Locomotion Defense and capturing prey Reproduction 8 / 10 Which class is characterized by only having a polyp stage in their lifecycle? Hydrozoa Scyphozoa Anthozoa Cubozoa 9 / 10 Which class does *Hydra belong to? Hydrozoa Scyphozoa Anthozoa Cubozoa 10 / 10 Which cnidarian is known for forming dangerous blooms that affect fisheries? Hydra Aurelia Physalia Physalia Your score isThe average score is 0% 0% Restart quiz Online MCQS test of phylum cnidaria set 3 Quiz 1 / 10 What type of relationship do corals have with zooxanthellae? Parasitic Commensal Mutualistic Competitive 2 / 10 What is the role of mesoglea in cnidarians? Digestion Locomotion Structural support Reproduction 3 / 10 The life cycle of many cnidarians alternates between which two forms? Polyp and larva Medusa and planula Polyp and medusa edusa and adult 4 / 10 Which cnidarian class includes organisms with complex eyes and potent venom?* Hydrozoa Scyphozoa Anthozoa Cubozoa 5 / 10 Which structure do cnidarians use to capture prey?* Nematocysts Spicules Setae Tentacles 6 / 10 The symbiotic algae found in corals are called: Zooxanthellae Cyanobacteria Diatoms Dinoflagellates 7 / 10 Which cnidarian is used in research for studying regeneration? Aurelia Hydra Physalia Chironex 8 / 10 The gastrovascular cavity in cnidarians serves which function(s)? Digestive Circulatory Both digestive and circulatory Reproductive 9 / 10 Which cnidarian class is known for its potent venom and cube-shaped medusae? Hydrozoa Scyphozoa Anthozoa Cubozoa 10 / 10 The Portuguese man o' war belongs to which class? Hydrozoa Scyphozoa Anthozoa Cubozoa Your score isThe average score is 0% 0% Restart quiz Online MCQS test of phylum cnidaria set 4 Quiz 1 / 10 Which cnidarian class includes sea anemones and corals? Hydrozoa Scyphozoa Anthozoa Cubozoa 2 / 10 What type of nervous system do cnidarians have? Central nervous system Peripheral nervous system Nerve net No nervous system 3 / 10 Which of the following is a sessile form in cnidarians? Medusa Polyp Larva Planula 4 / 10 What is the function of nematocysts in cnidarians? Digestion Reproduction Defense and capturing prey Respiration 5 / 10 2. *Which layer forms the outer epidermis of cnidarians?* Ectoderm Endoderm Mesoderm Mesoglea 6 / 10 What type of symmetry do cnidarians exhibit? Bilateral Radial Asymmetrical Pentamerous 7 / 10 The sessile form of cnidarians is known as Medusa Polyp Planula Ephyra 8 / 10 Which of the following is a primary threat to coral reefs? Predation by fish Ocean acidification Increased salinity Lack of sunlight 9 / 10 Which cnidarian class is known for forming coral reefs? Hydrozoa Scyphozoa Anthozoa Cubozoa 10 / 10 Which of the following is a key characteristic of the Anthozoa class? Only medusa form Colonial lifestyle Alternation between polyp and medusa forms Only polyp form Your score isThe average score is 0% 0% Restart quiz
