Answer:
Tissues are made up of group of cells
carrying a specialized function. Each specialized function is taken up by a
different tissue. Since these cells of tissue carry out only a particular
function, they do it very efficiently. For example, in human beings, muscle
cells contract or relax to cause movement nerve cells carry messages, and blood
flows to transport gases, fool hormones and wastes materials and so on.
Likewise, in plants, vascular tissues (xylem, phloem) conduct water and food
from one part of the plant to other parts. So, multicellular organisms show
division of labour through tissues.
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