Which two phyla of animals exhibit metamerism (segmentation)?

Some characteristics are given below:
$(1)$ Polymorphism $(2)$ Metagenesis $(3)$ Metamorphosis
$(4)$ Canal system $(5)$ Cnidoblast cells $(6)$ Blind sac body plan
Select the correct statement:

Which of the following pairs is correctly matched?

Identify the correct terms for the following analogy-based questions:
$(i)$ Aquatic Annelids : Parapodia :: Arthropods : ....
$(ii)$ Annelids : Nephridia :: Arthropods : ....

Assertion: All birds,except the ones like koel (cuckoo),build nests for retiring and taking rest during night time (day time for nocturnal).
Reason: Koel lays its eggs in the nests of tailor bird.

Which of the following statements are true or false?
$(i)$ Suckers are found in liver fluke.
$(ii)$ In Arthropods,fertilization is external.
$(iii)$ Chordata is divided into $4$ subphyla.
$(iv)$ Water vascular system is present in Hemichordata.