Angiosperms are characterized by the presence of which of the following?

Which is the smallest angiosperm?

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

Which of the following plant groups includes seed-bearing plants?

Which of the following is a saprophytic angiosperm?

What can be the habitat of angiosperm species?