Which of the following matching pairs incorrect ?

Options

A. `{:("Mollusca" ,-, "Pseudocoel"):}`
B. `{:("Cnidaria" ,-, "Nematocyst"):}`
C. `{:("Annelida" ,-, "Chloragogen cells "):}`
D. `{:("Echinodermata" ,-, "Water vascular system"):}`

Answer

A

Explanation

Molluscs are coelomate animals . The body cavity is a true coelom often reduced to haemocoel surrounding the heart , nephridia and gonads .