B, there are many ethical issues associated with stem cells.
Vascular tissue in plants is made of two specialized conducting tissues: xylem, which conducts water, and phloem, which conducts sugars and other organic compounds. A single vascular bundle always contains both xylem and phloem tissues.
Asexual receive all genetic material from one parent. Sexual inherits half of it’s genetic information from each parent.
Hope this helps.