What characters of seed plants make them specially adapted to life on land ?

Life cycle of seed plants is

Often flowers of animal pollinated plants are specially adapted for

the success of seed plants on land is mainly due to

Why the seed plants are most successful of all land plants ?

Which character make C_(4) plants special ?

What are amphibians ? How are they adapted for such mode of life ?

List any two characters of Pea plants used by Mendal in his experiments other than height of the plants and the colour of the seed.

What is the megasporophyll of a seed plant called ?

A pea plant is heterozygous for a character and recessive homozygous for another character. Both these characters are located on different chromosomes . Another pea plant of the same species is heterozygous for both the characters. If these plants are crossed , what proportion of their offsprings will be heterozygous only for one character ?