PHOTO UNIT 3: MERISTEMS
OBJECTIVES:
- Define, describe and characterize meristematic tissue and compare against nonmeristematic tissue that is capable of cell division.
- Characterize growing cells from dividing cells and recognize and define growth adjustments when dividing cells begin increasing in volume.
3. Note how characteristics of mature cells differentiate as they develop.
4. Relate the formation of intercellular spaces to their function in the plant body.
Photos for this study:
3-1: Allium root tip (l.s.)
3-2: Allium root tip (l.s.)
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PHOTO STUDY 3-1 Allium (Onion): Root tip, l.s. (x 100, enlarged)
Study several cells a short distance above the level of the root cap. Here you see immature, embryonic cells. Note their very thin wall, which are primary only. Note also the relatively large nuclei and dense cytoplasm. Can you see vacuoles in these cells? Intercellular spaces?