What is a compound of dna molecule attached to a sugar portion?

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

What is the primary function of the nervous system?

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird