CBSE Class 11-science Biology Basis of Classification
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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?