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Where are apical, lateral, and intercalary meristems located in a plant?
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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 plant development, meristems are regions of cells capable of division and growth, categorized by their specific locations within the plant:
- Apical meristems: Located at the tips of roots and shoots, these are responsible for the primary growth and extension of the plant body.1
- Lateral meristems: Found in the vascular and cork cambia, these are responsible for secondary growth, which increases the thickness and girth of the stem.1
- Intercalary meristems: Situated at the internodesāthe regions between leaf attachmentsāand at the bases of leaves, particularly in monocotyledons like grasses.1
Unlike animals, plants utilize these meristematic regions to maintain the capacity for growth throughout their entire life span.1