The correct option is C Arthropoda – Segmented body. The body consists of the head, thorax and abdomen. Malpighian tubules help in excretion.
Arthropoda includes organisms which have a segmented body. The body consists of the head, thorax and abdomen. Malpighian tubules help in excretion.
In Hemichordates, development is indirect and includes a larval stage.
The animals are dioecious in molluscs as the sexes are separate.
Fertilisation is external in Echinodermata.