Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

Which of the following snakes is not poisonous?

In which of the following do the organisms of the Kingdom Animalia show great diversity?

Select the correct option for the following statements:
$(i)$ Platyhelminthes are pseudocoelomate / acoelomate.
$(ii)$ Cnidarians are radially symmetrical / asymmetrical.

Choose the false option.

Identify the mismatched pair regarding the endoskeleton of animals.