What is leaf apex definition?
The shape of the tip (apex) of the leaf. Rounded: the leaf apex is broadly rounded or blunt (obtuse). Acute: the leaf apex ends in a short sharp point. Acuminate: the leaf apex ends in a long drawn out point.
Where is the apex of a leaf?
Leaf apex. The outer end or apex of a leaf lamina that is opposite the petiole. Leaves apexes vary greatly from plant to plant and are useful in classification and identification.
How is a leaf related to math?
Leaf arrangement has been modeled mathematically since 1996 using an equation known as the DC2 (Douady and Couder 2). One fundamental assumption used in the DC2 equation is that leaves emit a constant signal to inhibit the growth of other leaves nearby and that the signal gets weaker at longer distances.
What is the pattern of leaves?
The arrangement of veins in a leaf is called the venation pattern. Monocots have parallel venation in which the veins run in straight lines across the length of the leaf without converging. In dicots, however, the veins of the leaf have a net-like appearance, forming a pattern known as reticulate venation.
What is the shape of leaf apex?
The leaf or leaflet apex is blunt to rounded. Generally, converging margins are separated by an angle of more than 90 degrees.
What is Apex in plants?
In botany, apex refers to the highest point or vertex of a plant stem or root. The shoot apex is where fresh stems, leaves, and other parts of a plant grow after the old parts fall off or dry up.
Do plants do math?
Plants have a built-in capacity to do maths, which helps them regulate food reserves at night, research suggests. UK scientists say they were “amazed” to find an example of such a sophisticated arithmetic calculation in biology.
What are example of fractals?
Examples of fractals in nature are snowflakes, trees branching, lightning, and ferns.
What is leaf surface?
The leaf surface can be smooth, variously wrinkled, ridged or hairy. Smooth: no obvious surface ornamentation, smooth to touch. Pleated: the leaf surface is folded longitudinally in pleats (plicate). Grooved/furrowed/chanelled: the leaf surface has obvious grooves or channels, usually running longitudinally (sulcate).