Suppose you cut down two plants. you find that, at the root center, one has parenchyma and the other has a ring of xylem and phloem. are these monocots or eudicots?

In the section of a monocot root, the central portion is occupied by large, well developed pith. It is made from thin walled parenchymatou tissue. The vascular bundle (xylem and phloem) is radial, arranged in a ring. Xylem and phloem are found at different radii alternating with each other. Therefore, the given section is of monocot root.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.