Which of the following represents the correct combination of a taxonomic group with its characteristics, without any exception?

Easy

A

Ctenophora - Diploblastic, radially symmetrical, sexually reproducing animals living in freshwater
B

Aschelminthes - Triploblastic, bilaterally symmetrical, pseudocoelomates with external fertilisation
C

Platyhelminthes - Triploblastic, bilaterally symmetrical animals which exhibit internal fertilisation
D

Annelida - Bilaterally symmetrical, schizocoelomates with closed circulatory system and parapodia

Solution

All Platyhelminths are triploblastic bilaterally symmetrical animals with organ level of organisation. All Platyhelminths exhibit internal fertilisation.
All Ctenophores are exclusively marine.
All Aschelminths exhibit internal fertilisation.
Among Annelids, parapodia are present only in class Polychaetes (e.g., Nereis).

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