Animalscaretips
Cephalized organisms display bilateral symmetry. Sense organs or tissues are concentrated on or near the head, which is at the front of the animal as it moves forward. The mouth is also located near the front of the creature.
- Do animals with bilateral symmetry have a central nervous system?
- What do animals with bilateral symmetry have?
- Which group has animals with bilateral symmetry?
- Why is bilateral symmetry important in the evolution of animals?
- Can an animal have both radial and bilateral symmetry?
- Does the animal have bilateral or radial symmetry?
- How does an animal with bilateral symmetry differ from an animal with radial symmetry?
- What was the first animal to have bilateral symmetry?
- What is the first animal group that exhibits bilateral symmetry?
- Where is bilateral symmetry found?
- Which animal group has radial symmetry?
Do animals with bilateral symmetry have a central nervous system?
The interneurons enhance capacities for centralized integrative processing in the nervous system. The peripheral nervous system (PNS) also is increasingly consolidated in bilaterally symmetrical animals.
What do animals with bilateral symmetry have?
Animals possessing bilateral symmetry have a dorsal (top) side, a ventral (bottom ) side, an anterior (head) end, a posterior (tail) end, and a distinct left and right side.
Which group has animals with bilateral symmetry?
The vast majority of animals display bilateral symmetry; also known as plane symmetry, this is a trait that applies to 99% of all animals, in the majority of phyla: Chordata, Annelida, Arthropoda, Platyzoa, Nematoda, and most Mollusca.
Why is bilateral symmetry important in the evolution of animals?
Having bilaterally symmetrical bodies (the same on both sides along an axis) permit them to propel forward in a straight line. In evolutionary history, animals that moved quickly and efficiently from point A to point B would have been more successful and selected for than those who were ineffective at locomoting.
Can an animal have both radial and bilateral symmetry?
Biradial symmetry is found in organisms which show morphological features (internal or external) of both bilateral and radial symmetry. Unlike radially symmetrical organisms which can be divided equally along many planes, biradial organisms can only be cut equally along two planes.
Does the animal have bilateral or radial symmetry?
Most animals are bilaterally symmetrical with a line of symmetry dividing their body into left and right sides along with a “head” and “tail” in addition to a top and bottom. Only sponges (phylum Porifera) have asymmetrical body plans.
How does an animal with bilateral symmetry differ from an animal with radial symmetry?
Explanation: The bilateral symmetry animals body are divided into two equal halves from a particular radius passing through the centre. The direction of cutting is fixed. ... The radial symmetry animals body are cut into two equal halves from all the radii of the animals body passing through the centre.
What was the first animal to have bilateral symmetry?
The bilateral symmetry in Animals is probably developed from a sea anemone (Cnidaria) with radially symmetry (Nematostella vectensis) [7–11]. In addition, many plants exhibit different kinds of symmetry, e.g., rotational symmetry, but also bilateral symmetry.
What is the first animal group that exhibits bilateral symmetry?
''Plathelminthes'' is the first phylum to exhibit bilateral symmetry. Echinodermata have radial symmetry as adults but bilateral symmetry as larvae stage.
Where is bilateral symmetry found?
This type of symmetry is advantageous as it permits the organism to be streamlined in shape. Complete step by step answer: Bilateral symmetry is found in Platyhelminthes and Mollusca.
Which animal group has 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).
