BIOA02H3 Lecture 3: Plant Cells

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Bioa02 module 1 lecture 3: plant cells and plant tissues. Animals have determinant growth, it is very predictable how animals look when they reach maturity. Plants have indeterminant growth, no two plants look the same when they reach maturity: needs meristems. Plants: undifferentiated cells differentiated cells and undifferentiated indeterminate growth. Animals: undifferentiated cells differentiated cells determinate growth. Gives rise to differentiated and undifferentiated cells. Undifferentiated cells remain undifferentiating and keep growing: whorls of branches to determine the age of a conifer. There is a limitation despite have undifferentiated cells due to environmental factors. 959 cells in adult of c. elegans. Leaf primordia protect shoot apical meristem: surrounded by many leaves to protect sam, produces side branches and important for growing tall. Protected by (peeling cells of) root cap. As the root grows, root cap cells are peeled away to protect ram. Make up simple or complex plant tissues.

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