Which best explains why angiosperms are the most diverse and successful plant group today? a. reproduction is aided by flowers, protected seeds, and insect pollinators. b. water transport and photosynthesis are aided by vascular tissue. c. plant growth and increasing size are aided by a new way to distribute nutrients. d. reproduction is aided by exposed seeds and wind pollination.

The right answer is A.

Angiosperms constitute the bulk of our natural landscape and include about 230,000 species with a variety of shapes and sizes. Thus, Eucalyptus are trees that can reach more than 100 meters in height while the lenses of water (Lemna) consist of a simple chlorophyllian blade from 1 to a few millimeters, provided with a simple root and floating at the surface of the ponds.

Angiosperms colonize the whole planet, with the exception of a few countries in the most extreme environments: some species are aquatic (including marine), others are adapted to the most arid environments (eg cacti) . Most species live independently; some are however parasites (mistletoe) or saprophytes.

"a.) well–developed vascular system."