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Primary and secondary growth

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Presentation on theme: "Primary and secondary growth"— Presentation transcript:

1 Primary and secondary growth

2 Primary Growth

3 Primary growth mitosis cell division cell elongation

4 Cell division in the root hairs mitosis cell elongation differentiation

5 Growing points in lateral buds mitosis cell division and elongation

6 Mitosis – cell division for growth and repair (asexual)
2. Chromosomes make copies of themselves which are initially stuck together. A single cell with 4 chromosomes, in 2 pairs. 1. Chromosomes untangle shorten and thicken. 3. Chromosomes line up. 5. Two identical daughter cells are made. 4. Identical pairs of chromosomes separate as the cell squeezes in the middle.

7 Cross Section of Monocot and Dicot stems

8 Vascular bundles

9 Xylem and Phloem

10 Annual Growth Rings

11

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