The leaves of plants are very important. They are the plant's manufacturing organs and act also in the capacity of lungs and partly as an excretory system. The most important plant function takes place in the leaves. Called photosynthesis, it is a process whereby the chlorophyll in the leaf cells with the aid of the sun's energy transforms atmospheric carbon dioxide into organic substances essential to plant growth.
The plant, like all living organisms, also breathes, i.e. it absorbs oxygen and exhales carbon dioxide. This, too, takes place mainly in the leaves.
Leaves may be either simple, with a single blade, which may be lobed, e.g. the hazel, gooseberry and hawthorn, or compound, with three or more blades attached to one stalk, e.g. the bladdernut and common elder.
This is caused by the decomposition of the green chlorophyll, the predominance of yellow xanthophyll and red carotenoid pigments and increased level of anthocyanin in the cell plasm. Autumn coloration is likewise a distinguishing feature in a number of shrubs.
The placing of the leaves in the crown likewise contributes to the better utilization of light. This is aided by the intricate branching of the crown as well as by the varying length and angle of the leaf stalks. Respiration and transpiration take place through pores or stomata.
Leaf margins are smooth and entire (e.g. the common cotoneaster, woodbine, cornelian cherry and dogwood), serrate (the common elder, blackthorn and rose), double serrate (the hazel, European green alder and raspberry), toothed (the English holly and mahonia) or lobed (the hawthorn and currant). - 15266
The plant, like all living organisms, also breathes, i.e. it absorbs oxygen and exhales carbon dioxide. This, too, takes place mainly in the leaves.
Leaves may be either simple, with a single blade, which may be lobed, e.g. the hazel, gooseberry and hawthorn, or compound, with three or more blades attached to one stalk, e.g. the bladdernut and common elder.
This is caused by the decomposition of the green chlorophyll, the predominance of yellow xanthophyll and red carotenoid pigments and increased level of anthocyanin in the cell plasm. Autumn coloration is likewise a distinguishing feature in a number of shrubs.
The placing of the leaves in the crown likewise contributes to the better utilization of light. This is aided by the intricate branching of the crown as well as by the varying length and angle of the leaf stalks. Respiration and transpiration take place through pores or stomata.
Leaf margins are smooth and entire (e.g. the common cotoneaster, woodbine, cornelian cherry and dogwood), serrate (the common elder, blackthorn and rose), double serrate (the hazel, European green alder and raspberry), toothed (the English holly and mahonia) or lobed (the hawthorn and currant). - 15266
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The variety of garden materials present a futher range of garden design in your garden plan, involving color and texture as well as linear design.
