Question

What is midrib?

Answer 1

Hint: Midrib is the central, thicker, linear structure, which runs from the plant thallus or lamina, and the Midrib is usually seen in the true leaves, as the vein running from the leaf base to the apex, its main functions are to provide support and it is a translocative vessel.

Complete answer:
 The midrib is commonly found at the back part of the leaf, which becomes the storage of the stomata.
Whereas the leaf blade is an expanded thin structure, which is extended on either side of the midrib.
Midrib helps the leaf to keep in an upright position, and it also helps to keep the leaf strong during the wind.
It also supports the leaf in such a way, to make it stand and expose it to proper sunlight.
The midrib is also called as midvein, where it contains the vascular bundles, such as xylem and the phloem, which helps in the transport of water, food, and the nutrients, apart from the midvein in the leaf, lateral veins are also present, which helpful for protection, and transport.
Each leaf typically has a leaf blade, stipules, midrib, and the margin.
Whereas the outline of the midrib is useful for the differentiation of plants and identification of their species and families.
Along with midrib or midvein, the leaf of the plants also contains other lateral veins, which is different in different plants, and the leaves are also classified based on the arrangement of veins that are called venation.

Note:
In order to say the midrib or midvein in an understanding way, it is the central vein of the leaf, where the other leaves are formed from it, and the main function is support, in various situations and for the transport of essential materials in the plants.