Peas, beans, and peanuts are all examples of legumes. legumes are a specific type of plant which possess nodules on their roots, as shown below. what is the purpose of these nodules? a. the nodules store plant sugars which are created during the process of photosynthesis. b. the nodules contain pumps which allow water to enter the roots using reverse osmosis. c. the nodules contain chemicals which repel insects, like ants and beetles. d. the nodules contain bacteria which can convert atmospheric nitrogen into ammonia.

The purpose of these nodules is that they contain bacteria whcih has the ability to convert atmospheric nitrogen into ammonia.

Explanation:

A small buldged like part present in the roots of leguminous plant due to symbiosis association of root with the nitrogen fixing bacteria such as rhizobium is called as root nodules.

It is composed of protein and nitrogen fixing bacteria. Under nitrogen deficient condition, the legemunous plant with help of root nodules traps the atmospheric nitrogen and fixes it with the help of nitrogen fixing bacteria present in them.

b a mature ovary of a plant.

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.