Give two examples of tissues that are different in a mature stem than they are in a young stem.

Explanation:

Like animals plants multicellular eukaryotes whose bodies are composed of orangs tissues and cells with the highly specialized functions. The relationships between plant organs tissues and cell types.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.