Bilateria Quiz

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Questions and Answers

Which phylum is not included in the grade Bilateria?

Chordata
Arthropoda
Mollusca
Cnidaria (correct)

What type of symmetry is characteristic of animals in the grade Bilateria?

Bilateral symmetry (correct)
Radial symmetry
Spherical symmetry
Asymmetry

Which end of the animal is typically distinct in animals with bilateral symmetry?

Ventral end
Posterior end
Anterior end (correct)
Dorsal end

What type of animals are included in the grade Bilateria in terms of body layers?

Triploblastic (D) Signup and view all the answers

Describe bilateral symmetry and give an example of an animal with bilateral symmetry.

Bilateral symmetry is when an animal's right side is approximately the same as the left side, with a distinct anterior end. An example of an animal with bilateral symmetry is a butterfly. Signup and view all the answers

What are the characteristic features of animals with bilateral symmetry?

Animals with bilateral symmetry have a clearly differentiated head present at the anterior end, a distinct posterior end, and clearly defined dorsal and ventral surfaces. Signup and view all the answers

Which animal phyla are included in the grade Bilateria?

The animal phyla included in the grade Bilateria are Platyhelminthes, Nematoda, Annelida, Mollusca, Arthropoda, Echinodermata, Hemichordata, and Chordata. Signup and view all the answers

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