Symmetry It is the property where parts of things resembles each o.pdf

Symmetry : It is the property where parts of things resembles each other. Bilateral symmetry and
radial symmetry are found mostly in animals.
Radial symmetry: There is presence of similar body parts that are distributed in circular manner
around a central axis e.g. in case of echinoderms and coelenterates .Animals having radial
symmetry possess two dorsal and ventral sides instead of right and left sides.
Bilateral symmetry: In this case body is divided into two equal parts through central plane. The
two equal halves are called right and left e.g. human body which can be divided into two equal
parts through sagittal plane.
Differences between radial and bilateral symmetry:
1. Radial symmetry possess symmetric axis while as bilateral symmetry has a symmetric plane.
2. In radial symmetry more than two similar portions of the body can be identified while as in
bilateral symmetry only two similar portions can be identified.
3. Most of the radially symmetric animals have aquatic habitat while as bilaterally symmetric
animals are found in both land and water.
4. Among animals bilateral symmetry is more common as compared to radial symmetry.
5.There is special type of symmetry found in echinoderms known as penta radial symmetry
while as bilaterally symmetric animals can be divided in to two parts only.
6. Cnidarians, Echinoderms and unicellular organisms are radially symmetric while as all other
phyla in animal kingdom exhibit bilateral symmetry.
Solution
Symmetry : It is the property where parts of things resembles each other. Bilateral symmetry and
radial symmetry are found mostly in animals.
Radial symmetry: There is presence of similar body parts that are distributed in circular manner
around a central axis e.g. in case of echinoderms and coelenterates .Animals having radial
symmetry possess two dorsal and ventral sides instead of right and left sides.
Bilateral symmetry: In this case body is divided into two equal parts through central plane. The
two equal halves are called right and left e.g. human body which can be divided into two equal
parts through sagittal plane.
Differences between radial and bilateral symmetry:
1. Radial symmetry possess symmetric axis while as bilateral symmetry has a symmetric plane.
2. In radial symmetry more than two similar portions of the body can be identified while as in
bilateral symmetry only two similar portions can be identified.
3. Most of the radially symmetric animals have aquatic habitat while as bilaterally symmetric
animals are found in both land and water.
4. Among animals bilateral symmetry is more common as compared to radial symmetry.
5.There is special type of symmetry found in echinoderms known as penta radial symmetry
while as bilaterally symmetric animals can be divided in to two parts only.
6. Cnidarians, Echinoderms and unicellular organisms are radially symmetric while as all other
phyla in animal kingdom exhibit bilateral symmetry..

1. Symmetry : It is the property where parts of things resembles each other. Bilateral symmetry and
radial symmetry are found mostly in animals.
Radial symmetry: There is presence of similar body parts that are distributed in circular manner
around a central axis e.g. in case of echinoderms and coelenterates .Animals having radial
symmetry possess two dorsal and ventral sides instead of right and left sides.
Bilateral symmetry: In this case body is divided into two equal parts through central plane. The
two equal halves are called right and left e.g. human body which can be divided into two equal
parts through sagittal plane.
Differences between radial and bilateral symmetry:
1. Radial symmetry possess symmetric axis while as bilateral symmetry has a symmetric plane.
2. In radial symmetry more than two similar portions of the body can be identified while as in
bilateral symmetry only two similar portions can be identified.
3. Most of the radially symmetric animals have aquatic habitat while as bilaterally symmetric
animals are found in both land and water.
4. Among animals bilateral symmetry is more common as compared to radial symmetry.
5.There is special type of symmetry found in echinoderms known as penta radial symmetry
while as bilaterally symmetric animals can be divided in to two parts only.
6. Cnidarians, Echinoderms and unicellular organisms are radially symmetric while as all other
phyla in animal kingdom exhibit bilateral symmetry.

Solution

Symmetry : It is the property where parts of things resembles each other. Bilateral symmetry and
radial symmetry are found mostly in animals.
Radial symmetry: There is presence of similar body parts that are distributed in circular manner
around a central axis e.g. in case of echinoderms and coelenterates .Animals having radial
symmetry possess two dorsal and ventral sides instead of right and left sides.
Bilateral symmetry: In this case body is divided into two equal parts through central plane. The
two equal halves are called right and left e.g. human body which can be divided into two equal
parts through sagittal plane.
Differences between radial and bilateral symmetry:
1. Radial symmetry possess symmetric axis while as bilateral symmetry has a symmetric plane.
2. In radial symmetry more than two similar portions of the body can be identified while as in
bilateral symmetry only two similar portions can be identified.
3. Most of the radially symmetric animals have aquatic habitat while as bilaterally symmetric

2. animals are found in both land and water.
4. Among animals bilateral symmetry is more common as compared to radial symmetry.
5.There is special type of symmetry found in echinoderms known as penta radial symmetry
while as bilaterally symmetric animals can be divided in to two parts only.
6. Cnidarians, Echinoderms and unicellular organisms are radially symmetric while as all other
phyla in animal kingdom exhibit bilateral symmetry.