Worksheetsbio-cnidarians
Total questions: 11
Worksheet time: 6mins
What is the symmetry of cnidarians?
Bilateral symmetry
Asymmetry
Radial symmetry
All of the above
What is the cell used by cnidarians to attack their prey?
Erythrocyte
Hepatocyte
Melanocyte
Nematocyte
What is pneumatophore's role in medusae?
Respiration
Excretion
Circulation
Reproduction
In hydrozoans, the polyp specialized for asexual budding is the...
Gastrozooid
Gonadozooid
Gonozooid
Gonorrhezoid
In scyphozoans, the ends of a strobila that detach are called...
Medusae
Blastula
Ephyrae
Juvenile scyphistoma
Which order of scyphozoans listed below is most similar to the order semaeostomeae?
Rhizostomae
Stauromedusae
Coronatae
Leptomedusae
Which of the hydroida below do not have a skeletal system?
Leptomedusae
Anthomedusae
Limnomedusae
Coronatae
Which of the following is not considered the role of corals in an ecosystem?
Forming symbiotic relationships with algae
Provide shelter for reef fish
Protect the coast from tropical storms
For decomposition processes
Where do Cnidarians live?
Freshwater and marine waters
Freshwater
Marine waters
Grassland
Which of the following is not a characteristic of cnidarians?
Nervous system present
Radial symmetry
They show both intracellular and extracellular digestion in the gastrovascular cavity.
Exclusively aquatic and marine
Which is the function of the pedal disk?
To help subdue live prey in gastrovascular cavity
Permits water circulation
Used for attachment
Help them to expand and contract their body
