Ecdysozoansprotostomes are categorized into two clades: lophotrochozoa and ecdysozoa. ecdysozoa includes about eight phyla, including the phyla arthropoda and nematoda. arthropods and nematodes (roundworms) are among the most abundant of all animal groups. the simplified evolutionary tree below shows the relationship between arthropods, nematodes, and lophotrochozoans. (there are more ecdysozoan phyla than shown on this tree.)part a - comparing nematodes and arthropodsnematodes and arthropods are the largest ecdysozoan phyla. which of the following statements are true? select all that apply. the cuticle in nematodes lengthens as the animal grows. arthropods are named for their jointed appendages. nematodes are acoelomate, whereas arthropods are coelomate. both nematodes and arthropods possess an external covering, or cuticle. some nematodes are parasitic on humans. arthropods possess an open circulatory system. both nematodes and arthropods must molt in order to increase in size. both nematodes and arthropods have segmented body plans. nematodes possess a closed circulatory system.

option a and d is the correct answer

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answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the 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.