Question

I want both the answer of 1and 2 questions

Answer 1

hi there
in 1. a,band c belong to molucs
they are acelomate
2. a 2,8,7 valency -1
b 2,8,1 valency +1

Answer 2

15) they all come under mollusca
characterestics:
a) they  have a soft body
b)they don't have a body cavity
c)they are bilaterally symmetrical

16)a)electronic configuration=2,8,7
      valency=1
b)electronic configuration=2,8,1
valency=1


hope it helps

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