Petal of Christmas cactus flower

Petal of Christmas cactus flower

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A single Christmas cactus flower petal is made up of numerous, elongated, pinkish cells. Each cell contains these main elements: the nucleus, the cytoplasm and the membrane. Except animal cells, all the other cells (the ones of bacteria, plants, etc.) are delimitated from their neighbor cells by a cell wall which offers them strength and shape.