CBSE Class 11 science: Basis of Classification Videos

• assertion: scientist place phylae in the highest classification reason: they are only 4 possible phylae
  
• describe about on protista kingdom?
• Define metamerism.
• State any two phyla of non-chordates which have radial symmetry as their characteristic feature.
• What is a true coelom?
• What are diploblastic animals?
• Name the embryonic layers present in diploblastic animals.  
• Define notochord.
• Why is it said that echinoderms show secondary radial symmetry?
• What symmetry pattern do humans possess? Which part of the human body is said to be the dorsal part?

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