Vascular plants, such as pine trees, are usually much larger than non-vascular plants, such as mosses. which of the following is the best explanation for this difference?

vascular plants can only transport water from one cell to the next cell.
non-vascular plants can transport water in tube like structures called xylem and phloem.
vascular plants can transport water in tube like structures called xylem and phloem.
non-vascular plants transport water only in their roots.

well non vascular plants have no roots, seeds, and dont have phloem and xylem, etc. vascular plants DO have roots etc. non-vascular plants absorb water from their environments which are usually very moist. so the answer I think would be A. hope this helps

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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it would be heredity