Plant roots have extensions called root hairs. These repairs are important in the homeostasis of the plant. Which statement best explains the importance of the repairs to the stems and leaves of the plant?

Root hairs increase the surface area of the roots for nutrient and water absorption

Explanation:

The correct answer would be that root hairs increase the surface area of the roots for nutrient and water absorption.

Generally, root hairs are extensions of epidermal cells of the roots of plants whose primary function is to increase the surface area of the root and increase the volume of soil the plant can mine for water and nutrients for metabolic purposes.

Water and nutrients diffuse from the soil through the root hairs and conducting tissues of the plant conduct these resources to the parts where they are needed for metabolic activities.

the correct answer is b

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.