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Questions and Answers
What type of skeleton do invertebrates have?
What type of skeleton do invertebrates have?
What do invertebrates consume for energy?
What do invertebrates consume for energy?
Other organisms
Invertebrates generally have differentiated tissues except for ______.
Invertebrates generally have differentiated tissues except for ______.
Porifera
Invertebrates possess a vertebral column.
Invertebrates possess a vertebral column.
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How many openings does an invertebrate's digestive chamber typically have?
How many openings does an invertebrate's digestive chamber typically have?
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Where is the pneumostome located in gastropods?
Where is the pneumostome located in gastropods?
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What is the name of the breathing hole in gastropods?
What is the name of the breathing hole in gastropods?
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All gastropods are symmetrical.
All gastropods are symmetrical.
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Glaucus atlanticus exhibits internal symmetry.
Glaucus atlanticus exhibits internal symmetry.
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Study Notes
Invertebrates Overview
- Invertebrates possess either a hydrostatic skeleton (e.g., worms, jellyfish) or a hard exoskeleton (e.g., insects, crustaceans).
Characteristic Features
- Lack a vertebral column, distinguishing them from vertebrates.
- Classified as heterotrophs, relying on the consumption of other organisms for nourishment.
- Generally composed of specialized tissues, with the exception of Porifera (sponges) which lack tissue differentiation.
- Have a digestive chamber that may have one or two openings to the exterior, facilitating digestion and waste expulsion.
Morphological Features
- Gastropods, a class of mollusks, exhibit asymmetry, particularly evident in those with a helical shell.
- Although gastropods may initially appear externally symmetrical, they feature a pneumostome, a breathing hole located consistently on the right side.
- Example organism: Glaucus atlanticus, which shows external symmetry but develops asymmetrical cerates during growth.
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Description
Explore the fascinating world of invertebrates, focusing on their structural and morphological features. This quiz covers characteristics such as the absence of a vertebral column and the various skeletal forms they possess, including hydrostatic and exoskeletons. Test your knowledge about these diverse organisms and their unique adaptations.
