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How do intercalary meristems help grasses regrow after being cut?

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fern life cycle — Plant development The life cycle of the fern. (1) Clusters (sori) of sporangia (spore cases) grow on the undersurface of mature fern leaves. (2) Released from its spore case, the haploid spore is carried to the ground, where it germinates into a tiny, usually heart-shaped, gametophyte (gamete-producing structure), anchored to the ground by rhizoids (rootlike projections). (3) Under moist conditions, mature sperm are released from the antheridia and swim to the egg-producing archegonia that have formed on the gametophyte's lower surface. (4) When fertilization occurs, a zygote forms and develops into an embryo within the archegonium. (5) The embryo eventually grows larger than the gametophyte and becomes a sporophyte.

In the context of plant development, grasses are uniquely adapted to survive grazing and mowing because of the location of their intercalary meristems.1

Unlike many other plants that rely primarily on apical meristems located at the tips of shoots for growth, grasses possess meristematic regions situated at the base of their leaves and at the internodes (the stem regions between where leaves attach). Because these meristems are located near the base of the plant rather than at the vulnerable tips, they remain intact even after the upper portions of the grass are removed by grazing animals or lawnmowers.213

These regions contain cells capable of continuous division and growth, allowing the plant to rapidly regenerate lost tissue. This evolutionary adaptation enables grasses to tolerate high levels of grazing and continue their growth throughout their life span, a trait that has allowed them to thrive in environments frequently disturbed by herbivores.13