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Questions and Answers
What does an animal body plan encompass?
What does an animal body plan encompass?
Which of the following is NOT part of an animal body plan?
Which of the following is NOT part of an animal body plan?
When did most types of animal body plans arise according to the text?
When did most types of animal body plans arise according to the text?
What role do animal body plans play in evolutionary biology?
What role do animal body plans play in evolutionary biology?
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What are some features included in animal body plans?
What are some features included in animal body plans?
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What type of symmetry is present in animals such as sea jellies and coral?
What type of symmetry is present in animals such as sea jellies and coral?
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Which type of animals have true body cavities called coeloms?
Which type of animals have true body cavities called coeloms?
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What is the term used to describe the top part of an animal's body?
What is the term used to describe the top part of an animal's body?
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Which term refers to animals whose mouth develops before the anus?
Which term refers to animals whose mouth develops before the anus?
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Which type of animals do not have true tissues, but have cells that have specific tasks?
Which type of animals do not have true tissues, but have cells that have specific tasks?
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Study Notes
Body Symmetry in Animals
- There are three common types of body symmetry in animal body plans: asymmetry, radial symmetry, and bilateral symmetry.
- Asymmetry is present mainly in the phylum Porifera, which is made up of sponges.
- Radial symmetry is when an animal looks the same from its center in all directions.
- Bilateral symmetry means that there are two distinct halves to the animal, which are mirror images of each other.
Structures in Animal Body Plans
- Coelom is a true body cavity that allows for the growth of an animal's organs while keeping them separated from the body tissue.
- Pseudocoelom is a cavity that acts the same way as a coelom but does not have tissue lining the entire body cavity.
- True tissues are specialized cells and tissues that have specific tasks such as building muscles, organs, or ligaments.
- Animals with true tissues are called eumetazoans.
Location of Structures in Animal Body Plans
- The anterior part of an animal is the head, while the posterior is the opposite end from the anterior, often known as the tail-end.
- The dorsal side of an animal is the backside, and the ventral side is the bottom of the animal.
What are Animal Body Plans?
- An animal body plan is the sum of the organization and combination of an animal's body parts and features.
- Body plans include how a body is segmented, its body symmetry, and its disposition of limbs.
- The way that organs and tissues are structured in the body are also part of an animal body plan.
Features of Animal Body Plans
- Features of animal body plans include types of body symmetry, structures such as body cavities and tissues, patterns of body segmentation, and order of embryological development.
- Animal body plans tend to evolve adaptations that allow them to survive in their environments.
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Description
Explore the concept of animal body plans, which encompass the organization and combination of body parts, segmentation, symmetry, limb disposition, and internal structure of organs and tissues. Discover how different animals may share the same body plan despite varying appearances.
