Which of the following is NOT true:

W) electron tunneling is a phenomenon known since the early formulations of quantum mechanics

X) interstellar dust is now believed to constitute less than 1% of the mass in the interstellar medium

Y) antibiotic resistance in bacteria can arise from bacteria incorporating exogenous DNA into their genomes

Z) plant auxin is typically produced in bud scales and has the restricted role of cellular elongation
Z) PLANT AUXIN IS TYPICALLY PRODUCED IN BUD SCALES AND HAS THE RESTRICTED ROLE OF CELLULAR EDONGATION