The soil around a lilac bush was watered with a solution containing radioactive phosphorus. Several hours later, radiation was detected in it’s
branches. Through which structures did the radioactive phosphorus read
the branches?
A. stomata

B. guard cells

C. xylem vessels

D. phloem vessels

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall