meristem
Sign in to savethumb|Tunica-corpus model of the apical meristem (growing tip). The epidermal (L1) and subepidermal (L2) layers form the outer layers called the Tunica (biology)|tunica. The corpus (L3) will form the vascular and stem tissues. Cells in the outer layers divide in a sideways fashion relative to each other, which keeps these layers distinct, whereas the lower layer divides in a more random fashion in all directions.|right
AI overview
A meristem is a region of plant tissue, like the growing tip shown here, where cells actively divide to create new growth. These specialized areas are important because they contain distinct layers of cells that divide in different ways—outer layers dividing sideways to stay organized, and inner layers dividing randomly—which allows plants to develop their various tissues like skin and vascular systems.
AI-generated from the Wikipedia summary — may contain errors.
Article
18 sectionsContents
- Primary meristems
- Secondary meristems
- Basal meristems
- Shoot Apical Meristems
- Root apical meristem
- Intercalary meristem{{anchor|intercalary}}
- Floral meristem
- Apical dominance
- Diversity in meristem architectures
- Role of the KNOX-family genes
- Indeterminate growth of meristems
- Cloning
- Induced meristems
- Lateral meristems
- See also
- References
- Sources
- External links
thumb|Tunica-corpus model of the apical meristem (growing tip). The epidermal (L1) and subepidermal (L2) layers form the outer layers called the Tunica (biology)|tunica. The corpus (L3) will form the vascular and stem tissues. Cells in the outer layers divide in a sideways fashion relative to each other, which keeps these layers distinct, whereas the lower layer divides in a more random fashion in all directions.|right
In cell biology, the meristem is a structure composed of specialized tissue found in plants, consisting of stem cells, known as meristematic cells, which are undifferentiated cells capable of continuous cellular division. These meristematic cells play a fundamental role in plant growth, regeneration, and acclimatization, as they serve as the source of all differentiated plant tissues and organs. They contribute to the formation of structures such as fruits, leaves, and seeds, as well as supportive tissues like stems and roots.