Answer:
<h2>c. Division of these two groups occurred after the protostome developmental sequence appeared. </h2>
Explanation:
- Protosomes are such types of organisms in which the mouth part developed first during embryonic development.
- Those animals in which anus develop first are known as deuterostomes.
- This differentiation takes place during the embryonic development of the organisms.
- Since lophotrochozoan and Ecdysozoa both are protostomes animals and categorized on the basis of molecular evidence.
- Thus these two groups were formed after the appearance of the protostomes.
Ans.
The first pass effect is defined as a phenomenon of metabolism of drug, in which drug concentration is greatly decreased before reaching the systemic circulation. It represents that fraction of drug lost, at the time of absorption of drug in gut.
Thus, the client is not receiving all the dosage of ingested drug (aspirin) because of the 'first pass effect.'
