How are metaphors and extended metaphors differ

A metaphor is a figure of speech in which two dissimilar things are used to make a comparison, but an extended metaphor is a comparison that is continuously made throughout a piece of written work (more commonly in poetry).

Here is the list of the answers of the given statements above:
1. used to make a statement, ask a question, or give a command. = verb
2. modifies a word or word group other than a noun or pronoun. = adverb
3. shows relationship of noun or pronoun to rest of the sentence. =preposition
4. connects words, phrases, clauses. = conjunction
5. modifies a noun or noun substitute. = adjective
6. simple exclamations. = interjection
7. names a person, place, or thing. = noun
8. noun substitute. = pronoun