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WorksheetsSponges and Cnidarians
Total questions: 15
Worksheet time: 9mins
Cnidarians have tentacles that grow in a ring around a central mouth in a shape known as:
Symbiotic
Planktonic
Bilateral Symmetry
Radial Symmetry
Which of the are classified as Cnidarians? (Choose all that apply.)
Jellyfish
Anemones
Sponge
Shark
Which of the following is NOT true of corals and coral reefs?
Coral reefs can be exposed to natural stresses and "bleach".
Coral reefs are only located in Australia.
Hard corals build reefs which are diverse ecosystems.
Corals can face danger when people boat near reefs or harvest coral.
The stinging cells of a jellyfish are called:
Cnidoblast
Cilia
Nematocysts
Zooxanthellae
Reorder the following from the broadest classification to more specific.
(This sequence is missing Genus and Species.)
Kingdom
Phylum
Class
Order
Family
The basic structure of the coral organism is:
Polyp
Medusa
Nematocyst
Cnidoblast
Cnidarians respire using:
Mouth
Lungs
Cell Membranes
Gills
Which of the following cells are NOT found in a sponge?
Collar Cells
Nematocysts
Amoebocytes
Water and waste exit a sponge through its:
Ostia
Nematocysts
Osculum
Mouth
The main shape of a jellyfish can be classified as:
Polyp
Nerve net
Medusa
Nematocyst
Which characteristics do Cnidarians share?
Bilateral Symmetry
Radial Symmetry
Simple Nervous System
Ability to Sting
Ability to walk
Why are sponges considered animals and not plants?
They take in carbon dioxide.
They take in oxygen.
They photosynthesize.
They filter feed and consume small plankton.
They are able to walk along the bottom of the ocean.
Which type of coral build reefs?
Hard coral
Soft coral
Both build coral reefs
The beneficial living arrangement between the coral polyps and the tiny algae within their tissues is known as:
Radial symmetry
Symbiosis
Cnidarians
Nematocysts
What is a gastrovascular cavity?
Stomach like part of an anemone where digestion occurs
The stinging tentacles on an anemone
The circular body shape of a jellyfish
The relationship between clownfish and anemones
