Among plants known as legumes (beans, peas, alfalfa, clover, ete.) the seeds are contained in a fruit that is itself called a legume, better known as a pod. Upon opening such pods, it is commonly observed that some ovules have become mature seeds, whereas other ovules have not. Thus, which of the following statements is (are) true? 1. The flowers that gave rise to such pods were not pollinated 2. Pollen tubes did not enter all of the ovules in such pods. 3. There was apparently not enough endosperm to distribute to all of the ovules in such pods. 4. The ovules that failed to develop into seeds were derived from sterile floral parts. 5. Fruit can develop, even if all ovules within have not been fertilized A) 1 only B) 1 and 5 C) 2 and 4 D) 2 and 5 2. Gymnosperms differ from both extinct and extant (living) ferns because they A) are woody B) have macrophylls. C) have pollen. D) have sporophylls.

1. Pollen tubes did not enter all of the ovules in such pods

2.C) have pollen

Explanation:

1. When the ovules are not fertilized by pollen, they do not become seeds and remain immature ovules as with legumes.The flower of the legumes has several ovules, the pollen tube is the one that opens the way for the fertilization of each ovule.

2. Gimnosperms reproduce by pollen that is transported mainly by the wind and fertilizes the ovule to give rise to a bare seed, Unlike ferns that reproduce by spores that are found in soros under their leaves and are characterized by having alternation of generations.

ur answer is e & d

explanation:

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.