Question

Complete gut first appeared in

A.  Arthropoda 

B.  Annelida 

C.  Platyhelminthes 

D.  Aschelminthes​

Answer 1

Answer:

arthropoda

Explanation:

i thinks it's right

Answer 2

Answer:

D.  Aschelminthes​

Explanation:

Aschelminthes​ are the first phylum with complete gut or digestive system.

Before this phylum animals don't have complete gut system but from this phylum animal started with complete digestive system.

So, the correct answer is option d)Aschelminthes​

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