Echinodermata are exclusively marine organisms. Sea stars , sea cucumbers, sea urchins, sand dollars, and brittle stars are all examples of echinoderms.There is no excretory system in phylum Echinodermata. Nitrogenous waste ammonia diffuses out through body surface.
In which of the following paris of animals, digestion is intracellular and water
NextWhich one of the following statement is not correct?
Match the columns I and II, and choose the correct combination from the options given.
MediumWhich of the following is incorrect ?
MediumStatement I : Chordates are characterized by the presence of a notochord. Statement II : All chordat
MediumWhich of the following statements about subphylum Vertebrata are true? (a) Vertebrates have a dorsal
MediumMatch List-I with List-II : Choose the correct answer from the options given below:
MediumSpongilla is :-
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