- 1 Which of the following animals displays radial symmetry?
- 2 Which of the following animals displays bilateral symmetry?
- 3 What is a typical characteristic of molluscs?
- 4 Do Deuterostomes lack true tissue?
- 5 What is an example of radial symmetry?
- 6 What is the definition of radial symmetry?
- 7 What is bilateral symmetry and give an example?
- 8 What is radial and bilateral symmetry?
- 9 Is a human radial symmetry?
- 10 What are the 7 classes of mollusks?
- 11 What are the 5 main classes of Mollusca?
- 12 What defines a mollusk?
- 13 What is considered true tissue?
- 14 Do Cnidaria have true tissues?
- 15 What is the only group of animals to lack tissues?
Which of the following animals displays radial symmetry?
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|All animals||are heterotrophic|
|Which of the following animals displays radial symmetry?||a sea anemone|
|Which of the following items demonstrates radial symmetry?||an apple pie|
|Organisms with true radial symmetry||do not have a distinct head region and tend to be sedentary or passive drifters.|
Which of the following animals displays bilateral symmetry?
Examples of animals that possess bilateral symmetry are: flatworms, common worms (“ribbon worms”), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates. The symmetry of an animal generally fits its lifestyle.
What is a typical characteristic of molluscs?
Main characteristics of Mollusca: Unsegmented soft body with bilateral symmetry. Presence of an internal or external shell. A toothed tongue (made mostly of chitin) called the radula. A mantle which is a fold in the body wall that lines the shell.
Do Deuterostomes lack true tissue?
Deuterostomes lack true tissues. Deuterostomes always lack a body cavity. The opening that forms during deuterostome gastrulation becomes the mouth.
What is an example of radial symmetry?
Radial symmetry is found in the cnidarians (including jellyfish, sea anemones, and coral) and echinoderms (such as sea urchins, brittle stars, and sea stars).
What is the definition of radial symmetry?
: the condition of having similar parts regularly arranged around a central axis. Other Words from radial symmetry Example Sentences Learn More About radial symmetry.
What is bilateral symmetry and give an example?
* Bilateral symmetry means that the body can be divided along a plane that divides the animal into left and right sides. *Humans, dogs, and even sharks can exhibit bilateral symmetry.
What is radial and bilateral symmetry?
radial symmetry: a form of symmetry wherein identical parts are arranged in a circular fashion around a central axis. bilateral symmetry: having equal arrangement of parts ( symmetry ) about a vertical plane running from head to tail.
Is a human radial symmetry?
The bilaterally symmetrical human body can be divided by several planes. This is termed secondary radial symmetry. They are believed to have evolved from bilaterally symmetrical animals; thus, they are classified as bilaterally symmetrical.
What are the 7 classes of mollusks?
Mollusks can be segregated into seven classes: Aplacophora, Monoplacophora, Polyplacophora, Bivalvia, Gastropoda, Cephalopoda, and Scaphopoda. These classes are distinguished by, among other criteria, the presence and types of shells they possess.
What are the 5 main classes of Mollusca?
The Phylum Mollusca consist of 8 classes: 1) the Monoplacophora discovered in 1977; 2) the worm-like Aplacophora or solenogasters of the deep sea; 3) the also worm-like Caudofoveata; 4) the Polyplacophora, or chitons; 5 ) the Pelecypoda or bivalves; 6) the Gastropoda or snails; 7) the Scaphopoda, or tusk shells; and 8)
What defines a mollusk?
: any of a large phylum ( Mollusca ) of invertebrate animals (such as snails, clams, or squids) with a soft unsegmented body usually enclosed in a calcareous shell broadly: shellfish.
What is considered true tissue?
True Tissue Instead, sponges have what is called cellular-level organization. The phylum Cnidaria contains what are considered the first eumetazoans, meaning that they possess true tissues. A tissue is a group of similarly structured cells that all work together to carry out a particular function.
Do Cnidaria have true tissues?
Cnidarians are said to be the simplest organisms at the tissue grade of organization; their cells are organized into true tissues. Cnidarians are essentially bags made of two cell layers. The outer ectoderm, or epidermis, contains the cnidocysts, the stinging cells that are characteristic of the phylum.
What is the only group of animals to lack tissues?
Of all the branches of complex animals, sponges are the only group lacking TRUE TISSUE.