Lamina

Definition - What does Lamina mean?

In botany, lamina refers to the blade-like organ of a petal or leaf. The lamina normally protrudes above ground level and presents a thin and flat structure. Specialized for photosynthesis, laminas tend to be thin and flat in order to expose most of the plant’s chloroplast to sunlight. This enables the plant to absorb as many nutrients as possible.

MaximumYield explains Lamina

The lamina presents various parts, including:

  • Veins: The vascular bundle which is found not far from the plant’s surface. The veins also carry food and water alike. The veins also support the lamina.
  • Lobes: The rounded portion of the leaf margin. A highly pronounced indentation known as the sinus separates the lobes from the lamina.
  • Margins: The margins trace the edges of the leaf to mark the boundary.
  • Leaf apex: This refers to the very tip of the leaf which is right opposite the petiole.

According to botanists, the lamina is one of the most important parts of the plant since it prepares food material to ensure proper growth.

This definition was written in the context of Botany
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