Leaf tissue organs in plants

Welcome all still meet again with me that always gives the experience of life in the world, this time I'll tell you how the performance of the plant leaves.

Leaf is the most effective plant organ to organize the process of photosynthesis. Leaves in monocot plants are not much different from dicotyledonous plant leaves. Leaves monocot plants generally have bones leaf arrangement parallel or curved.

While leaves on dicotyledonous plants generally have a composition of bones menjari or pinnate leaves. Regarding the preparation network, basically leaves dicots and monocots have the same network which is composed as follows:

a. Epidermis

The epidermis is the outermost layer consisting of a single layer of flattened cells, sometimes coated with a thick-walled cuticle or waxy coating. At the mouth of the epidermis are stomata or leaf functions facilitate gas exchange and transpiration (evaporation).

Land plants are generally stomata in the lower epidermis of the leaf surface while water plants, stomata many upper surface. In some plant species on cut or leaf tips are structures called hydathodes.

This structure is useful for the release of water, if the water is absorbed large plants while evaporation bit. The structure has similarities with leaves that continue to break their mouth and associated with timber vessels on leaf veins.

b. Parenchyma

Parenchyma is part of the leaf epidermis located between the upper and lower epidermis. Parenchyma there are 2 kinds:

1. palisade parenchyma (palisade tissue) is the parenchymal tissue that lies below the upper epidermis. Consists of cells that form Prismatic, meeting each other and contain many kloropis.

2. spongy parenchyma (spongy tissue) is the parenchymal tissue that lies between the palisade parenchyma tissue below the epidermis. Thin-walled cells, have spaces between cells, chlorophyll and because it is composed like a sponge so-called spongy parenchyma. In the spongy tissue found in the form of xylem transport bones leaf.

c. File carrier

Nerkas carrier consists of phloem file at the top and bottom of the xylem. Phloem and xylem are enveloped by a sheath comprising transporting files from cells sklerenkrim, so it is rather strong. Framework leaf / leaves no other bone is the carrier leaves the file system.

So the carrier beam consists of xylem that transports water and minerals serves to leaves, while the phloem transport function of photosynthesis from leaves to all parts of the plant.

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