Which of the following statements is not correct?

Which of the following phyla possess an open circulatory system?
$(a)$ $Arthropoda$
$(b)$ $Annelida$
$(c)$ $Chordata$
$(d)$ $Mollusca$

In which of the following is the genus name,two characters,and its phylum mismatched,while the other three are matched correctly?

Genus Name	Two Characters	Phylum
$A$. Pila	$(i)$ Segmented body,$(ii)$ Radula in mouth	Mollusca
$B$. Asterias	$(i)$ Spiny skin,$(ii)$ Water vascular system	Echinodermata
$C$. Sycon	$(i)$ Pore-bearing,$(ii)$ Canal system	Porifera
$D$. Periplaneta	$(i)$ Jointed appendages,$(ii)$ Chitinous exoskeleton	Arthropoda

All worms are

In which animal phyla is metameric segmentation observed?

Identify the location and function of the following structures:
$(i)$ Water vascular system
$(ii)$ Cloaca
$(A)$ $(i)$ Location: Phylum $Echinodermata$; Function: Locomotion, food capture, and respiration. $(ii)$ Location: Posterior body part of amphibians, reptiles, birds, and some fishes; Function: Common chamber for digestive, reproductive, and urinary tracts.
$(B)$ $(i)$ Location: Phylum $Chordata$; Function: Excretion. $(ii)$ Location: Anterior body part; Function: Digestion only.
$(C)$ $(i)$ Location: Phylum $Mollusca$; Function: Respiration. $(ii)$ Location: Dorsal side; Function: Excretion only.
$(D)$ $(i)$ Location: Phylum $Arthropoda$; Function: Circulation. $(ii)$ Location: Ventral side; Function: Reproduction only.