Dicotyledonous and monocotyledonous plants are included in which group?

Angiosperms occupy the first position in the plant world because -

In which classes did Bentham and Hooker classify the Angiosperms?

Which plant is shown in the given figure?

Which is the correct option for the angiosperm plants having the following characteristics?
$i.$ Name of the plant with size $2-5 \ mm$
$ii.$ Name of the tallest plant
$iii.$ Name of the plant with the heaviest and largest flower
$iv.$ Name of the plant with the tallest and largest inflorescence

How many classes are included in the division Angiospermae?