Observing Stomata on Lily Leaf Epidermis

Photosynthesis is significant in the sense that it provides food and the life giving gas ______ as a by-product.

In order to understand photosynthesis completely, we first need to study the structure of a ______ and how it is adapted to play an important role in the process of photosynthesis.

A leaf consists of a broad flat surface called the ______, This surface is exposed to the sun in order to capture maximum sunlight.

A network of veins in the leaves carry water from the stem to the leaves. There is a main vein in the centre, called ______.

There are tiny pores on the leaf surface, called ______, which allow gaseous exchange. Stomata are generally more in number on the lower surface.

To study stomata from a leaf epidermis, Take a lily leaf. Fold it into half. Tear it. Now, with the help of forceps, pull out a thin peel from the lower side. Put the peel in a watch glass with water and add a few drops of safranin stain. Transfer the peel to a glass slide. Add a drop of glycerin to the specimen and cover it with a cover slip. Now, observe it under the microscope. What do you see. You will observe a thin layer of cells, called the epidermis. The epidermis will be discontinuous at some places. What are these. These are the ______ pores surrounded on either sides by guard cells. The guard cells contain chloroplasts. Green plants synthesise their own food f of glucose, by air and water from the soil, in the presence of sunlight with the help of chlorophyll. This process of making food is called photosynthesis (photo means light, synthesis means to make), Chlorophyll is the green pigment found only in plant cells. Name the raw material Photosynthesis Photosynthesis is a biochemical process taking place in green plants by which they synthesise their food. They use carbon dioxide from the air and water from the soil as raw materials for this process. The energy is provided by the sun. The chlorophyll present in the chloroplasts of the plant (leaf) cells trap the sun's light energy for the process.

The energy is provided by the ______. The chlorophyll present in the chloroplasts of the plant (leaf) cells trap the sun's light energy for the process.

Green plants synthesise their own food f of glucose, by air and water from the soil, in the presence of sunlight with the help of ______.

Chlorophyll is the green pigment found only in ______ cells.

Photosynthesis is a biochemical process taking place in green plants by which they synthesise their food. They use carbon dioxide from the air and water from the soil as raw materials for this process. The energy is provided by the ______.