Angiosperms are the most successful terrestrial plants. This success is due to all of the following except…?

Question

Angiosperms are the most successful terrestrial plants. This success is due to all of the following except…?

Answer 1

Wow!  You didn't give much of a hint as to what the choices are to find the exception!  So perhaps I can give you the adaptations that assisted in making the angiosperms successful!

Water proofing of the leaves and stems to reduce water loss.  Conduction system to transport nutrients and water.  Extensive root systems to obtain water and minerals.  Reproductive system to maximize the successful production and distribution of seeds.  Development of protective coverings for seeds to increase survival of the seeds.