Which organisms were dominant on Earth approximately $200$ million years ago?

The $Jurassic$ period of the $Mesozoic$ era is characterized by which of the following?

In which period is the beginning of agriculture (plant cultivation) believed to have occurred?

Match the following geological eras in Column $A$ with their respective time periods in Column $B$ and key evolutionary events in Column $C$. Which of the following is the correct match?

Column $A$	Column $B$ and $C$
$i$. Cenozoic	$2-65 \ \text{mya}$,Origin of vertebrates
$ii$. Palaeozoic	$500-165 \ \text{mya}$,Rise of egg-laying mammals
$iii$. Mesozoic	$135-225 \ \text{mya}$,Reptiles dominant
$iv$. Proterozoic	$350-500 \ \text{mya}$,Trilobites dominant

The golden age of reptiles is

Match the organism with its appropriate origin time:

List-$I$	List-$II$
$(a)$ Jawless fish	$(1)$ $200$ million years
$(b)$ Sea weeds and plants	$(2)$ $500$ million years ago
$(c)$ Invertebrates	$(3)$ $350$ million years ago
$(d)$ Fish-like reptiles	$(4)$ $320$ million years ago