If you are given a specimen, what are the steps that you would follow to classify it?
The steps that we would follow to classify the given specimen will be
(i) First we would classify the specimen according to the level of organisation. The animals can be classified into Cellular and Tissue/Organ level.
(ii) The second criteria for classification would be on the basis of the body symmetry i.e. whether the specimen is of radial symmetry of bilateral symmetry.
(iii) The third classification would be on the basis of the body cavity or coelom. Wheteher the body cavity is present or absent. And whether the coelom is acoelom, pseudocoelom or true coelom
(iv) The specimen would be classified on the basis of the arrangement or the number of the layers into diploblastic or triploblastic.
(v) The specimen would then be classified on the basis of the presence or the absence of notochord.
Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? Why?
How useful is the study of the nature of body cavity and coelom in the classification of animals?
Ravi’s younger brother of class III stated that bats are like birds as they are able to fly.
How will you contradict him and make him understand that bats are mammals and not birds?
What are the modifications that are observed in birds that help them fly?
