Question

what is the exact difference between grades of organisation and symmetry

Answer 1

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The grade of organisation tells us about the Oraganism composition which is higher cell, tissue,organ And on the basis of composition grade is decided.

Refer the above pic for more information
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Symmetry is the dividation of Oraganism.

It is of 3 Types

1. Asymmetry

Organism cannot be divided into two halves from any plane. Eg Amoeba

2. Bilateral

Organism can be divided into two halves by cutting from a particular plane. Eg Human

3. Radial

Organism can be divided into two halves from any plane. Eg. Starfish

@X-SMARTY

Answer 2

Answer:

Explanation: GRADES OF ORGANISATION:

the grades of organisation means the way an organisation has different formation.Unicellular organisms like Amoeba have a single cell in the body and hence the organisation in its body is called protoplasmic grade of organisation some organisms have only sale in their body which is called cellular grade of organisation example PORIFERS. Some have tissues example COELENTERATES.They are said to have cell tissue grid organisation some have organs they are said to have tissue organ grade example Platyhelminthes.All other animals have organ system grade organisation.

SYMMETRY

Symmetry on the other hand shows the base of the body formation the symmetry can be understood by taking an imaginary cut through the animal body.Based on the symmetry that can be three types. In asymmetric animals there is no symmetry in any plane example Amoeba .the bilateral symmetry is one in which and imaginary Axis can pass through only one medium plane to divide the body into two equal halves.Most of the animals have bilateral symmetry and hence their organs are arranged in symmetric way on both the sides.The imaginary cut passing through the centre lexiscan give more than one equal halves the organs of such animals are arranged in a radius of an imaginary circle example Cnidarians