8. The extracellular pathway involves nonliving parts of roots and accounts for about 10%of the water that moves through the roots from the epidermis to the endodermis. True or False?
9. Mineral ions are absorbed into the root in the area about 1/8 inch, or 3 millimeters, above the root cap. True or False?
10. Microbial populations in the soil greatly improve some plants' abilities to absorb nutrients. True or False?