Answer: Concentration gradient (happy to help)
Explanation: The particles may move along or against their concentration gradient.
Both onion<span> and </span>elodea cells<span> had a </span>cell<span> wall and cytoplasm but the </span>onion<span> lacked chloroplasts. 1. </span>Onion<span> is a storage organ for the </span>onion<span> plant. It is underground so it can't do photosynthesis.</span>
Blue spruce, scots pine, eastern hemlock, western red-cedar, jack pine, and Iowa Juniper are some. There are many more, though, but there are way too many to list, :) hoped that helped:))
