Mérisztémákból

Mérisztémákból is a Hungarian term referring to tissues derived from meristems. Meristems are undifferentiated plant tissues responsible for growth. They consist of actively dividing cells that give rise to new cells, which then differentiate to form various plant tissues and organs.

Plant growth is primarily attributed to these meristematic tissues. Apical meristems, found at the tips of roots and shoots, are responsible for primary growth, leading to an increase in length. Lateral meristems, such as the vascular cambium and cork cambium, are responsible for secondary growth, resulting in an increase in girth.

The cells within meristems are small, isodiametric, and have large nuclei and dense cytoplasm. They lack vacuoles or have very small ones. These cells divide mitotically, and the daughter cells either remain meristematic, maintaining the meristem's size, or differentiate into specialized cell types. This process of cell division and differentiation is fundamental to plant development, allowing plants to grow, repair damage, and adapt to their environment. The study of meristematic tissues is crucial in understanding plant morphology, physiology, and developmental biology.