Traits of organisms are a direct result of two factors: the genetic material
present in previous generations and the type of reproduction, sexual or
asexual. Which of the following is true of cellular division through sexual
reproduction and asexual reproduction?

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

The process of photosynthesis

Dna strands are split apart to allow an opening for replication. the opening has two replication forks so synthesis goes toward them in 5' to 3' direction.