In a mushroom what is the umbrella shaped portion known as

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the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;