These questions will help you prepare for the lesson quiz. Be sure to read the feedback carefully for any questions you answer incorrectly, and review those topics before leaving this lesson and taking the quiz.
If an animal body is asymmetrical, what would it look like?
- It could have a line drawn down its center and the left and right sides would be exact mirror images of each other.
- The body would be arranged around a central axis and could be divided into equal pieces like pieces of a pie.
- The body would have an irregular shape without any type of symmetry.
- The body could be cut into equal thirds, with each piece looking like the other two pieces.
Asymmetrical bodies are irregularly formed without a definite shape. An asymmetrical body is without symmetry.
Asymmetrical bodies are irregularly formed without a definite shape. An asymmetrical body is without symmetry.
Asymmetrical bodies are irregularly formed without a definite shape. An asymmetrical body is without symmetry.
Asymmetrical bodies are irregularly formed without a definite shape. An asymmetrical body is without symmetry.
Which phrase describes bilateral symmetry?
- A type of symmetry in which a single line can be drawn down the center of the body from the top of the head all the way to the tail and on each side of the line are two pieces that are mirror images to each other.
- A type of symmetry in which the body parts are arranged around a central axis like in the spokes of a wheel and all the pieces are equal and indistinguishable from the other pieces.
- A type of symmetry in which there is no regular shape or form and no evident scheme of equal arrangement of parts.
- It is the type of symmetry found in sponges, corals, sea cucumbers, and sea urchins.
Bilateral symmetry is illustrated by drawing a single line down the center of the body, starting from the top of the head all the way through the tail and both sides of the line are mirror images of each other.
Bilateral symmetry is illustrated by drawing a single line down the center of the body, starting from the top of the head all the way through the tail and both sides of the line are mirror images of each other.
Bilateral symmetry is illustrated by drawing a single line down the center of the body, starting from the top of the head all the way through the tail and both sides of the line are mirror images of each other.
Bilateral symmetry is illustrated by drawing a single line down the center of the body, starting from the top of the head all the way through the tail and both sides of the line are mirror images of each other.
Which phrase describes radial symmetry?
- Radial symmetry is illustrated by drawing a single line down the center of the body to create two mirror images of each other.
- Radial symmetry can be visualized using a bike wheel or a pizza. Body plans that are radial have body parts arranged around a central axis and each part is equal to every other part around the axis.
- Radial symmetry can be described as not having a definite shape or having an irregular shape.
- Radial symmetry is the type of symmetry that sponges have.
Radial symmetry is likened to pie with its pieces being equal in form and consistency, with each piece being indistinguishable from the other pieces. All these pieces, like spokes on a wheel, are arranged around a central axis.
Radial symmetry is likened to pie with its pieces being equal in form and consistency, with each piece being indistinguishable from the other pieces. All these pieces, like spokes on a wheel, are arranged around a central axis.
Radial symmetry is likened to pie with its pieces being equal in form and consistency, with each piece being indistinguishable from the other pieces. All these pieces, like spokes on a wheel, are arranged around a central axis.
Radial symmetry is likened to pie with its pieces being equal in form and consistency, with each piece being indistinguishable from the other pieces. All these pieces, like spokes on a wheel, are arranged around a central axis.
What does cephalization mean and what type of body symmetry lend itself to it?
- It is the formation of a tail in animals with bilateral symmetry.
- It is a way to organize the posterior end in animals with irregular shapes, or those with asymmetry.
- It is the concentration of nervous tissue on the anterior end of an animal with bilateral symmetry.
- It is the formation of a head in an animal with radial symmetry.
Cephalization is the concentration of nerve and brain cells in the anterior end of an animal with bilateral symmetry. In other words, it is the formation of a head and brain in those animals that are bilaterally symmetrical.
Cephalization is the concentration of nerve and brain cells in the anterior end of an animal with bilateral symmetry. In other words, it is the formation of a head and brain in those animals that are bilaterally symmetrical.
Cephalization is the concentration of nerve and brain cells in the anterior end of an animal with bilateral symmetry. In other words, it is the formation of a head and brain in those animals that are bilaterally symmetrical.
Cephalization is the concentration of nerve and brain cells in the anterior end of an animal with bilateral symmetry. In other words, it is the formation of a head and brain in those animals that are bilaterally symmetrical.
What types of organisms are bilaterally symmetrical?
- dolphins
- sponges
- jellyfish
- sea anemones
Dolphins are the only organism listed that could be considered to be bilateral. You can draw a central line down the body of a dolphin to create two mirror images on either side. Sponges are asymmetrical. Jellyfish and sea anemones have radial symmetry.
Dolphins are the only organism listed that could be considered to be bilateral. You can draw a central line down the body of a dolphin to create two mirror images on either side. Sponges are asymmetrical. Jellyfish and sea anemones have radial symmetry.
Dolphins are the only organism listed that could be considered to be bilateral. You can draw a central line down the body of a dolphin to create two mirror images on either side. Sponges are asymmetrical. Jellyfish and sea anemones have radial symmetry.
Dolphins are the only organism listed that could be considered to be bilateral. You can draw a central line down the body of a dolphin to create two mirror images on either side. Sponges are asymmetrical. Jellyfish and sea anemones have radial symmetry.
What types of organisms are radially symmetrical?
- sponges
- corals, sea anemones, and jellyfish
- elephants, sharks, and chimpanzees
- fish, worms, and frogs
Sponges are asymmetrical. Elephants, sharks, chimpanzees, fish, worms, and frogs are all bilaterally symmetrical. Corals, sea anemones, and jellyfish are radially symmetrical.
Sponges are asymmetrical. Elephants, sharks, chimpanzees, fish, worms, and frogs are all bilaterally symmetrical. Corals, sea anemones, and jellyfish are radially symmetrical.
Sponges are asymmetrical. Elephants, sharks, chimpanzees, fish, worms, and frogs are all bilaterally symmetrical. Corals, sea anemones, and jellyfish are radially symmetrical.
Sponges are asymmetrical. Elephants, sharks, chimpanzees, fish, worms, and frogs are all bilaterally symmetrical. Corals, sea anemones, and jellyfish are radially symmetrical.
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