30 Questions
What term is used to describe the digestive system of cnidarians with only one opening serving as both mouth and anus?
Incomplete digestive system
What is the main function of the non-living mesoglea in cnidarians?
Support and structure
How do cnidarians eliminate nitrogenous waste from their bodies?
Diffusion into the water outside the animal or into the gastrovascular cavity
What is the primary mechanism for nutrient transportation between cells in cnidarians?
Diffusion through mesoglea
Which term best describes the body arrangement of cnidarians around a central point, exhibiting consistent and repeating patterns?
Radial symmetry
What are the specialized cells in cnidarians responsible for defense and prey capture?
Cnidocytes
What is the function of choanocytes in a sponge?
To generate water current and trap food particles
What is the function of the osculum in a sponge?
To allow water to exit the sponge
What is the function of the ostium in a sponge?
To allow water to enter the sponge
What is the role of amoebocytes in a sponge?
To deliver nutrients, form eggs, deliver sperm, and differentiate cells
What is the function of spicules in a sponge?
To provide structural support
What is the function of the spongocoel in a sponge?
To act as a central cavity within the body of some sponges
Which class does the Manila clam belong to?
Class Bivalvia
What type of shell is commonly found in garden snails?
Planospiral
Which of the following animals belongs to Class Gastropoda?
Snail
Which of the following is a common name for animals in the family Haliotidae?
Abalone
What is the function of the flexible ligament in Class Bivalvia?
To form the hinge
Which of the following is not a common name for animals in the family Haliotidae?
Sea cucumbers
Which class of animals includes species that remain polypoid throughout their lives?
Class Anthozoa
Which class of animals has the medusa as the prominent stage in the life cycle?
Class Scyphozoa
Which of the following is a characteristic feature of Scyphozoans?
Lack of calcareous skeleton
Which of the following corals is NOT a soft coral species?
Brain coral (Diploria labyrinthiformis)
Which of the following jellyfish species is NOT a member of the class Scyphozoa?
Portuguese man o' war (Physalia physalis)
Which of the following is NOT a method of reproduction for Anthozoans?
Binary fission
What type of symmetry is best described as one half of an organism being a mirror image of the other half?
Bilateral symmetry
Which of the following is not a characteristic of Cnidarians?
Presence of mesoderm
What is the process called where a cell incorporates a particle by extending pseudopodia and drawing the particle into a vacuole of its cytoplasm?
Phagocytosis
What is the function of cnidocytes in Cnidarians?
Immobilization of prey
What is the term for an organism that has two sides or halves that are different in shape, size, or style?
Asymmetrical
Which of the following is not a common example of an animal with radial symmetry?
Humans
Test your knowledge about sustainable sponge farming with questions about poriferans, holdfast, spongocoel, osculum, and ostium. Learn more about sponge cells like amoebocytes with a glossary provided.
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