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WorksheetsPhylum Cnidaria
Total questions: 15
Worksheet time: 8mins
Which of these organisms is a cnidarian?
Earthworm
Butterfly
Hydra
Human
True or False: Cnidarians are diploblastic
True
False
What type of symmetry does a cnidarian have?
Bilateral
Radial
Asymetrical
None of the above
What is one way that cnidarians maintain homeostasis?
They secrete hormones
They regulate their body temperature
They live in coral reefs
None of the above
True or False: Cnidarians have proper organs
True
False
What is a good description of a Cnidarian nervous system?
A nerve net that responds to their radially symmetrical bodies
An series of canals that carry nutrients and gases
A network of hormone detectors
None of the above
What are the two body plans of a cnidarian?
Vertebrate and Invertebrate
Mobile and sessile
Polyp and medusa
How does the respiratory system of a Cnidarian function?
Respiration carried on by individual cells that obtain oxygen from water
Gills are used to obtain oxygen from the water
Lungs take in oxygen and let out carbon dioxide
Small pores are opened to let in gases
What type of cells are found in Cnidarians?
Cnidocytes
Plant cells
Neurons
Phloem cells
What is the highest level of functioning in a cnidarian?
Cell
Tissue
Organ
Organ system
True or False: Cnidarians use both sexual and asexual reproduction
True
False
Where does the cnidarian's digestion take place?
The stomach
The gastrovascular cavity
The cells
None of the above
How do cnidarians keep salt and water levels in check? (check as many as apply)
A series of canals
Excretion
Diffusion
None of the above
What is a difference between the two body forms of cnidarians?
One is sessile, one is mobile
One is bilaterally symmetrical, one is radially symmetrical
One has cnidocytes, the other does not
The two are exactly the same
In what form is waste excreted? (non-food waste)
Ammonia
Carbon dioxide
Urine
None of the above
