Question

If ${}^{\prime }{1}^{\prime }$ represents the extracellular digestion, ${}^{\prime }{2}^{\prime }$ represent the intracellular digestion and ${}^{\prime }{3}^{\prime }$ represent both type, then for coelentrata, ctenophore and porifera, select the correct option.

• A. $1,2,3$ respectively
• B. $3,3,2$ respectively
• C. $3,2,1$ respectively
• D. $3,2,2$ respectively

Answer 1

The correct option is B $3,3,2$ respectively

In Coelenterata, digestion is extracellular and intracellular. In Ctenophores digestion is again both i.e extracellular and intracellular. Whereas digestion is intracellular in Porifera.

So the correct option is "3,3,2".