Final answer:
Rhythm is a fundamental element of poetry, created by stressed and unstressed syllables. Meter refers to the rhythmical pattern of a poem, determined by arrangements of syllables. Different types of meter can be used in poetry for varying effects.
Step-by-step explanation:
Rhythm is a fundamental element of poetry and is created by stressed and unstressed syllables in a poem. The rhythmical pattern of a poem is called its meter, and it is determined by the arrangement of stressed and unstressed syllables. Each unit of stressed and unstressed syllables is called a foot. Different types of meter, such as iambic or trochaic, can be used in poetry to create different effects.