How are leaves and roots similar? (Select all that apply.) A. both contain xylem
B. both contain a pistil
C. both contain phloem
D. both contain stomata

Similarity: Both stems and roots contain vascular tissue (xylem and phloem), the circulatory system of the plant.

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.