How does the phloem function? how does the xylem function?

Which of these statements are true about scientific theories and hypothesis

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils