Question

what are world Heritage sites? why are they significant? discuss citing some of Indian sites in UNESCO world heritage list
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Answer 1

In tissue: Plants. Primary dermal tissues, called epidermis, make up the outer layer of all plant organs (e.g., stems, roots, leaves, flowers). They help deter excess water loss and invasion by insects and microorganisms. The vascular tissues are of two kinds: water-transporting xylem and food-transporting phloem.