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How do sponges differ from all other animals?Group of answer choicesSponges exhibit radial symmetry.Sponges lack true tissues.Sponges have a true coelom.Sponges lack a true body cavity.Sponges are autotrophs.

Question

How do sponges differ from all other animals?Group of answer choicesSponges exhibit radial symmetry.Sponges lack true tissues.Sponges have a true coelom.Sponges lack a true body cavity.Sponges are autotrophs.

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Solution

Sponges, also known as Porifera, differ from all other animals in several ways:

  1. Sponges lack true tissues: Unlike most animals, sponges do not have true tissues. They have specialized cells, but these cells do not form into tissue layers. This is a unique characteristic of sponges.

  2. Sponges lack a true body cavity: Most animals have a body cavity, which is a fluid-filled space between the digestive tract and the body wall. Sponges do not have this. Instead, they have tiny pores (hence the name Porifera) and canals, through which water flows.

  3. Sponges exhibit radial symmetry: This means they can be divided into equal halves in any plane along the central axis. This is different from bilateral symmetry (one plane divides the animal into mirror-image halves), which is common in most other animals.

  4. Sponges are not autotrophs: Unlike plants, sponges cannot make their own food. They are filter feeders, meaning they filter food particles out of the water flowing through their bodies.

  5. Sponges do not have a true coelom: A coelom is a body cavity lined with mesoderm, one of the three primary types of animal tissue. Sponges do not have this feature.

In summary, sponges are unique in the animal kingdom due to their lack of true tissues, lack of a true body cavity, radial symmetry, and their method of feeding.

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