Definition - What does Veinal mean?
As the term suggests, veinal is used to explain things related to the veins of vascular plant leaves. Leaves are found in vascular plants and the term veinal is used to describe these tissues in vascular plants. In plant biology, veinal corresponds to anything related to the leaf veins or the areas directly above the leaf veins.
MaximumYield explains Veinal
The veins of plant leaves are integral to plant photosynthesis, which in turn, is key for any plant growth. The leaf veins transport nutrients and minerals to the leaves so that they are healthy enough to conduct photosynthesis and facilitate plant growth.
A typical leaf features a petiole that connects to the midrib until the tip and lays on the lamina. The veins branch out from the midrib until the margins. The vein is commonly known as the vascular tissue of plants leaves and the veinal is this tissue or the tissue directly above.
A leaf has three tissues: veins, mesophyll and epidermis. The term venial is used to refer to the tissues in and around the leaf veins. For example, a lack of chlorophyll in leaves can result in green leaves with yellow veins (a condition called veinal chlorosis). Similarly, interveinal chlorosis occurs when the plant veins are green and the areas surrounding it are yellow. As a result, the term veinal is used to explain the context and conditions of leaves.