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Questions and Answers
What is the main reason why animals in phylum Porifera are considered parazoans?
What is the main reason why animals in phylum Porifera are considered parazoans?
- They do not show the formation of true embryonically derived tissues (correct)
- They perform most of the physiological functions typical of more complex animals
- They have a number of specific cell types
- They have a rudimentary endoskeleton of spicules and spongin fibers
What type of organization do sponges exhibit?
What type of organization do sponges exhibit?
- Very simple organization (correct)
- Complex organization with specialized tissues
- Intermediate level of organization
- Hierarchical organization with distinct organ systems
How are glass sponge cells connected together?
How are glass sponge cells connected together?
- Via individual cell membranes
- In a multinucleated syncytium (correct)
- By forming a cellular network
- Through specialized cell junctions
