Which of the following teeth are lophodont?

In mammals,Haversian canals are connected with each other by transverse canals,which are called:

Identify the correctly matched pairs of the germ layers and their derivatives.
$I.$ Ectoderm - Epidermis
$II.$ Endoderm - Dermis
$III.$ Mesoderm - Muscles
$IV.$ Mesoderm - Notochord
$V.$ Endoderm - Enamel of teeth

Match Column $X$ with Column $Y$ and select the correct option:

Column $X$	Column $Y$
$(1)$ Pheretima posthuma	$(P)$ Sunflower
$(2)$ Helianthus annuus	$(Q)$ Modern human
$(3)$ Rana tigrina	$(R)$ Earthworm
$(4)$ Homo sapiens sapiens	$(S)$ Frog

Match the following Column-$I$ with Column-$II$ and choose the correct combination.

Column-$I$	Column-$II$
$(a)$ Earthworm	$(i)$ Gizzard
$(b)$ Cockroach	$(i)$ Gizzard
$(c)$ Frog	$(iv)$ Cloaca
$(d)$ Rat	$(ii)$ Caecum

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