Why pines have pinnate leaves

1.	Why pines have pinnate leaves
Answer» Pines have needle like leaves.\xa0The\xa0needles\xa0of\xa0pines\xa0are arranged in a spiral about the stem. ... Like the leaves of all higher plants,\xa0pine needles have\xa0special microscopic pores on their surface, called\xa0stomata, which are important for exchange of water vapor, carbon dioxide, and oxygen.\xa0In particular, the outer surface of\xa0pine needles has\xa0a thick waxy layer, called a cuticle, which reduces evaporative water loss. At the microscopic level, the\xa0stomata are\xa0beneath the surface cells, so they\xa0are\xa0often called "sunken stomata." This\xa0stomatal\xa0adaptation reduces evaporative water loss.

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