Sponges have asymmetrical symmetry . When an animal’s body shape is asymmetrical, there is no axis or line that can be drawn where it is essentially...
What is the characteristic body shape of a sponge symmetry?
The simplest body structure in sponges is a tube or vase shape known as “asconoid” , but this severely limits the size of the animal. The body structure is characterized by a stalk-like spongocoel surrounded by a single layer of choanocytes.
Do sponges have radial or bilateral symmetry?
Sponges are unsymmetrical or radially symmetrical , with many cell types but no distinct tissues; their bodies contain numerous pores and sharp protective spicules. Coelenterates (phylum Cnidaria) are radially symmetrical, with two tissue layers (ectoderm and endoderm) surrounding an all-purpose gastrovascular cavity.
What is an example of 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 are the 3 types of symmetry?
Animals can be classified by three types of body plan symmetry: radial symmetry, bilateral symmetry, and asymmetry .
Why is SpongeBob a sponge?
First, there was the simple argument that SpongeBob has to be a sea sponge because he breathes underwater . ... Though he eats Krabby Patties, SpongeBob appears to be filter feeding in an episode. He also shows signs of regeneration, another trait of a sea sponge (he eats his own hands).
Which sponge body type is most efficient?
Leuconoid sponges are the best adapted to increase sponge size. This body plan provides more circulation to deliver more oxygen and nutrients per area in large sponges.
Does a sponge have Cephalization?
Sponges have no particular symmetry; they are not radially or bilaterally symmetrical. ... Cephalization only occurs in bilaterally symmetrical animals . Body cavity. The body cavity is the place where digestive and other internal organs form.
Where is bilateral symmetry found?
Bilateral symmetry is found in Platyhelminthes and Mollusca . If we draw a line from the interior and of the organism in Platyhelminthes to the posterior and then it will reflect each other forming bilateral symmetry which creates two matching halves.
What is difference between radial and bilateral symmetry?
The balanced distribution of the body shapes is referred to as the biological symmetry. ... The key difference between radial and bilateral symmetry is that radial symmetry generates identical body halves around the central axis whereas bilateral symmetry generates only two sides as left and right.
Which has a line or bilateral symmetry?
A shape has bilateral symmetry when it is the same on both sides of a line drawn down the middle.
How do you create symmetry?
- Click Object > Symmetry > Create New Symmetry. A symmetry line appears in the drawing window.
- Draw a curve or a shape. In the following example, the 3-point curve tool is used to draw a curve. ...
- You can edit the shape of the curve with the Shape tool .
What is symmetrical body shape?
A symmetrical shape is any shape the body makes which, if divided down the middle with an imaginary line, would show that each side is the same and forms a mirror image of the other side .
What is symmetry in nature?
Symmetry, in biology, the repetition of the parts in an animal or plant in an orderly fashion . Specifically, symmetry refers to a correspondence of body parts, in size, shape, and relative position, on opposite sides of a dividing line or distributed around a central point or axis.
Is SpongeBob really a sponge?
Although he might not look like one, SpongeBob is actually a sea sponge , but he looks like a kitchen sponge with pants, and this has caused some confusion for years. ... Hillenburg even added that SpongeBob is “made of cellulose but he has parents who are natural sponges”, so he got “the square gene”.
Is SpongeBob a house sponge?
In SpongeBob SquarePants, the main character is a sea sponge . The series’ creator, Stephen Hillenburg, was a marine science teacher and thought that the sponge was a fascinating and underrepresented animal. ... SpongeBob often displays traits typical of real-life sea sponges.
