Question

The success of seed plants on land is mainly due to

• A. Presence of conducting tissue
• B. Development of secondary growth
• C. Evolution of siphonogamy
• D. All of the above

Answer 1

Answer: (D)

All of the above

Seed plants are successful on land for the following reason:-
They have well developed vascular bundles that help in conduction.
To increase their strength most of them grow in width.
Formation of pollen tubes ensures fertilization called as siphonogamy.
Pollen does not require water medium so chances of mating increase.
Seed dispersal methods help them in the dispersal of offspring to a large distance.
So the correct option is 'All of the above'.