# what is the difference between radial symmetry and bilateral symmetry since in both the body has to be divided into two equal halves.

Bilateral symmetry:-Bilateral symmetry is the symmetrical arrangement of an organism or a body part along a central axis. As a result of which the body is divided into equivalent. It can be observed in organisms of phylum Platy helminthes. Radial symmetry is a type of symmetry in which the body of the organism into two equal halves by any plane passing through the central axis. Radial symmetry can be observed in the animals of the phylum Echinoderm

• -5

Sea anemones display radial symmetry.These organisms resemble a pie where several cutting planes produce roughly identical pieces. An organism with radial symmetry exhibits no left or right sides. They have a top and a bottom (dorsal and ventral surface) only.
Most radially symmetric animals are symmetrical about an axis extending from the center of the oral surface, which contains the mouth, to the center of the opposite, or aboral, end. This type of symmetry is especially suitable for sessile animals such as the sea anemone , floating animals such as jellyfish, and slow moving organisms such as starfish.

Bilateral symmetry
In bilateral symmetry (also called plane symmetry), only one plane, called the sagittal plane, will divide an organism into roughly mirror image halves. Thus there is approximate reflection symmetry. Often the two halves can meaningfully be referred to as the right and left halves, e.g. in the case of an animal with a main direction of motion in the plane of symmetry

• -5
Solution:
 - Radial Symmetry - Bilateral Symmetry (i) If the body of an animal is divided into two equal parts by cutting it in any plane passing through the centre of its body, then the body of the animal is said to have radial symmetry. (i) If the body of an animal is divided into left and right halves by one plane only, then the body of the animal is said to have bilateral symmetry. (ii) Animals of phylum coelenterate are radially symmetrical. (ii) Animals of phylum helminthes and higher phyla are bilaterally symmetrical.
• 41

In bilateral symmetry (also called plane symmetry), only one plane, called the sagittal plane , will divide an organism into roughly mirror image halves (with respect to external appearance only, seesitus solitus ). Thus there is approximate reflection symmetry . Often the two halves can meaningfully be referred to as the right and left halves, e.g. in the case of an animal with a main direction of motion in the plane of symmetry.

Radial symmetry is the regular arrangement of body parts around a central axis. When an organism is radially symmetrical, you could cut from one side of the organism through the center, to the other side, anywhere on the organism, and this cut would produce two equal halves.
• -4

IN RADIAL SYMMETRY ANY PLANE PASSING THROUGHTHE CENTRE OF BODY WILL DIVIDE IT INTO 2 EQUAL PARTS WHEREAS, IN BILATERAL SYMMETRY ONLY ONE PLANE PASSING THROGH THE CENTRE OF THE BODY CAN DIVIDE IT INTO 2 EQUAL PARTS.

• -5

In radial symmetry, any plane passing through the body into two identically equal parts whereas in bilateral symmetry a plane passing through the central axis divides the organism's body into the right and left part. Examples of radial and bilateral symmetry are Starfish, Octopus and Man, Butterfly respectively.

• -3

RADIAL SYMMETRY:-ANY BODY WHICH CAN BE DIVIDE IN TO TWO EQUAL  PART IS KNOWN AS RADIAL SYMMETRY

BILATERAL :- Aplane passing through the central axis divides the organism 's body into the right and left part IS KNOWN AS bilateral symmetry

• -5

in any planar axis if a body can be divided to get 2 equal halves id radial symmetry. if a body is only cut vertcally along central axis to get 2 equal left and right halves then that is called bilateral symmetry.

• -4

Radial symmetry is essentially circular- with one center point, the shape or design of the organism will be symmetrical around that point.

Bilateral symmetry is like drawing a line through the center of the organism, and having two matching sides. A butterfly is a great example of this, or a sea star.

• -4
Bilateral Symmetry:Symmetrical arrangement of an organism along a central axis,so that the body is divided into equivalent right and left halves by only one plane.
OR
An animal's body has bilateral symmetry when its right and left halves of the body have the same body design
Eg: mouse,humans

Radial Symmetry:A type of symmetry having only one body axis , through which the body can be divided into multiple planes to give mirror- image. Eg: starfish,jellyfish,sea urchins,corals.
• -4
RADIAL SYMMETRY: those animals which can be divided in two equal parts when cut through any plane then those                                           animals are said to have radial symmetry. EX: echinodermata
BILATERAL SYMMETRY: those animals which can be divided in  two equal parts when cut through only a single plain then those animals are said to have bilateral symmetry. EG:  cnidaria
• 8

What is the difference between Radial and Bilateral Symmetry?

• Bilateral symmetry has a symmetric plane while radial symmetry has a symmetric axis.

• Only two similar portions can be identified from bilateral symmetry whereas, from radial symmetry few similar portions of the body can be identified.

• All the radially symmetric animals are found in water, but bilaterally symmetric animals are found in both aquatic and terrestrial habitats.

• Bilateral symmetry is more common than radial symmetry among animals. In fact, there are more animal phyla with bilateral symmetry compared to radial symmetry.

• 23
simple!!
• -1
This much answers xD
• -1
Radial symmetry - Any plane passing through the central axis of body of organism divide it into equal half . / Bilateral symmetry - single plane passing through the central axis of body of organism which divide it into two identical left and right.
• -2
Reasons for arthopods being the largest kingdom
• 4
Yes
• 1
Radial symmetry..when a bodu cut down by from centre in any plane then its body divide into two equal halves..
Bilateral symmetry... When a body cut down vertically then its body divides into two equal halves...only by a single plane..
• -2 • -1
The difference b/w them is in bilatereal symmetry only one plane passes through the centre axis but in radial symmetry any plane passes through the centre...
• 2
Bilateral symmetry is when the body can be divided into 2 halves by only one plane , but in radial symmetry the body can be divided into 2 halves by more than 1 plane.
• 1
Radial symentry - any plane passing throug the centre divided into two equal parts are callwd radial symmentry
• 0
Radial means from many 'sections' of radius whereas for bilateral only one section is possible to divide the organisms into equal halves
• 1
In radial symmetry body can divided into two similar halves by plane passing through the centre while In bilateral symmetry body can be divided into two similar halves by only one plane along longitudinal axis of body.
• 2
In radial symmetry body can divided into two similar halves by any one plane passing through the centre while in bilateral symmetry body can be divided into two similar halves by only one plane along the horizontal axis of the body.
• 0
In bilateral symmetry, the body of the organism is divided into two sides as left and right by a basic body plane. Thus, bilateral symmetry is also called the plane symmetry. The plane, which divides the body bilaterally is referred to as the sagittal plane.
• 1
In radial symmetry, roughly identical pieces can be produced by cutting the organism in several planes along the central axis. Hence, any left or right sides cannot be identified within the organism but in bilateral symmetry, the body of the organism is divided into two sides as left and right by a basic body plane and the two sides generated here are the mirror images of each other
• 0
In the radial symmetry the body is divided into two halves from any plane passing from the central axis but in the bilateral symmetry body can be divided from one plane only which would divided the body in correct manner
• 1 • 0
Radial symmetry is from central axis and one can cut the organism in more than 2 equal halves and it promotes sessile form of life.
In bilateral symmetry one can cut organism in only 2 equal halves and it promotes active motile life.
• 0
Animals that are spherical are usually radially symmetrical. It means that by any means if it is devided through the daimeter it is symetric. While, bilaterally symmetric are those who are symmetric horizontally or vertically only.
• 0
Radial symmetry is exhibited by many planes... But bilateral symmetry is exhibited only by saggital plane..
• 0
When any plane passes through the centre axis of the body divides the organism into two identical halves
Ex :coelenterates. This in case of radial symmetry
Where as in bilateral symmetry the body can be divided into idenileft and right halves in only one plane
Ex : Annelids and molluscus
• 0
No. In radial symmetry the body when cut from any plance it divided into equal halfs.
In bilateral symmetry as name reveals bi means two. it means the body is divided into two equal halfs by cutting from only one plane.
• 0
in radial symmetry we can divide the body from any plane
in bilateral symmetry we can divide the body from one plane only
• 0
In bilateral it is equal right and left halves
But in radical it is equal halves
• 0
In bilateral symmetry the body is divided by single vertical plane whereas in radical symmetry the body is divided by by many plane either vertical or horizontal
• 0
Accepting that an organism should be divided into two equal halves but in which orientations does it divide there lies the main.
• 0
It is in ncert class 11 biology page no.47
• 0
3+5+7
• 0
What is the function of fungi
• 0
pahle chapter Carbon question
• 0
In bilateral symmetry, body can be divided into 2 equal and identical parts from one plane
Not more than two parts

While in radial symmetry , body can be divided into 4 parts and this can be achieved from 2 planes

To make this clear, we humans are bilateral we can be divided in two equal parts our left and right side

While in star fish ,which has radial symmetry, can be divided in more than 2 parts

If you are still confused google it
• 0
in radial symmetry anyone line divides two parts of animal but in bilateral symmetry only one line divides two parts of animal body
• 0
Radial symmetry - section taken from central axis.
Bilateral symmetry- section taken as two equal halves are seen in one plane.
• 0
Tere ko mili kya koi
• 0
In bilateral symmetry, body is divided in two equal halves, like we humas while star fish is an example of radial symmetry, it is divided into many identical and equal halves. The organisms which have both are called biradial organisms.
• 0
When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry. Ex - Coelenterates, ctenophores. Where as, the body can be divided into identical left and right halves in only one plane exhibit bilateral symmetry. Ex - annelids, arthropods
• 0
What is going
• 0 • 0
K kh jkillpik
• 0
In radial it can be by any axis but in bilateral if can be only from the central axis.
• 0
Any plane passing through the principal axis divides the body into two equal halves(Antimeres) is called as RADIAL SYMMETRY

In BILATERAL SYMMMETRY only one plane can divide the body into 2 equal halves

Hope it is helpful for you
• 0
,,,....
• 0
When a line pass through center and divide in two equal parts only in one plane called bilateral symmetry and when symmetry of line divide in two equal parts from any plane called radial symmetry
• 0
What is the difference between Radial and Bilateral Symmetry?

? Bilateral symmetry has a symmetric plane while radial symmetry has a symmetric axis.

? Only two similar portions can be identified from bilateral symmetry whereas, from radial symmetry few similar portions of the body can be identified.

? All the radially symmetric animals are found in water, but bilaterally symmetric animals are found in both aquatic and terrestrial habitats.

? Bilateral symmetry is more common than radial symmetry among animals. In fact, there are more animal phyla with bilateral symmetry compared to radial symmetry.
• 0
What are you looking for?