What is a similarity between an earthworm and a cockroach?

Which of the following structures is common between a cockroach and an earthworm?

Which of the following structures is common between an earthworm and a cockroach?

Which one of the following lists contains only mesodermal structures?

Identify the correct terms for the following analogy-based questions:
$(i)$ In cockroach,blood is : $Hemolymph$ :: In frog : ..........
$(ii)$ Before nymphal stage : $Wing$ $pad$ :: In adult cockroach : ...
$(iii)$ In earthworm : Tactile receptors :: In cockroach,dorsal side of the head : .....

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(a)$ Bronchioles	$(i)$ Dense Regular Connective Tissue
$(b)$ Goblet cell	$(ii)$ Loose Connective Tissue
$(c)$ Tendons	$(iii)$ Glandular Tissue
$(d)$ Adipose Tissue	$(iv)$ Ciliated Epithelium

Choose the correct answer from the options given below: