Question

Define Mesophyll tissue. What are the tissues present in it?

Answer 1

Hint: As we know that a tissue is a group of cells having a common origin and usually performing a common function. Mesophyll tissues are the ground tissue found in plant leaves. Mesophyll has two types of cells that are the Palisade Parenchyma and the Spongy Parenchyma.

Complete answer:
In this question, we learn about the Mesophyll tissue and the tissues which are present in it, let’s start with the Mesophyll tissue.
As we know that the vertical section of dorsiventral leaf through the lamina shows three main parts that are epidermis, Mesophyll and vascular system. In leaves, the ground tissue consists of thin-walled chloroplast containing cells and is called Mesophyll tissue. The tissues between the upper and the lower epidermis of leaves. In the leaves of dicotyledonous plants. Mesophyll tissue in monocots is largely composed of iso-diametric cells. Mesophyll cells are large spaces within the leaf that allow carbon dioxide to move freely. Mesophyll, which possesses chloroplast and carries out photosynthesis, is made up of Parenchyma. It has two types of cells.
> Palisade Parenchyma: It consists of 1-3 layers of columnar, closely packed cells. The cell of Palisade Parenchyma contains abundant chloroplast and is the main Photosynthetic tissue of the plant. Palisade cells contain 70 percent of all chloroplast.
> Spongy Parenchyma: Spongy Parenchyma consists of oval, rounded or irregular cells. This provides a large surface area for the diffusion of the gases involved in Photosynthesis. The number of chloroplasts in these cells, however, is less compared to the number of chloroplasts found in Palisade cells.

Note: As we know that the Mesophyll tissues are present in plant leaves and the most important role in the process of photosynthesis is that it helps in the process of transforming light energy into the chemical energy.