Absorption of Minerals

Factors Necessary for Mineral Absorption Following are the plant factors and environmental factors contribute to the effective mineral absorption. Plant Root System The water and mineral elements are present in the soils. To absorb both water and mineral elements from the soil depends upon their capacity to develop an extensive root system. Plant roots grow continuously and root growth and ...

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Minerals Nutrition

Mineral Nutrition History In remote pasts, it was realized that the land plant obtained nourishment from soils through their roots. This idea was supported by the common practice of additions of animals and plant manures to the soils for increasing the productivity of the crops. Only during the first half of the 19th century botanists began to understand that the ...

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Transpiration a Necessary Evil

Significance of Transpiration Transpiration is potentially harmful process in the following ways:  Water is of vital importance to plants. The plants expand huge amount of energy in absorbing water from the soil, but       the loss of water by transpiration results in tremendous energy.  Under conditions of deficient water supply the enormous loss of water by transpiration causes ...

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Factors Affecting the Rate of Transpiration

Factors Affecting the Rate of Transpiration The rate transpiration is affected by a number of environmental (external) and plant (internal) factors. These factors also affect the stomatal movements. Effect of Environmental factors The environmental factors such as humidity (vapour pressure), temperature, air movements (wind), atmospheric pressure, light and availability of soil water influence the rate of transpiration most. Effect of ...

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Theories Of Opening And Closing Of Stomata

Theories Of Stomatal Movement Various theories have been put forward to explain the change in osmotic potential of the guard cells. Photosynthesis in Guard Cells Guard cells contain chloroplasts, they synthesize sugar during day time that causes increase in osmotic potential of the guard cells and a subsequent increase in turgor pressure. At night, the sugar is converted into starch ...

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Hydrologic Cycle

Water is basic for all the life forms. Around 80% of water is available in a living cell.– It covers around 73% of surface of the earth as lakes, waterways, seas. There is a nonstop cycling of water amongst biotic and abiotic segments of biological community and the environment. This spinning happens through precipitation and dissipation. Formation of clouds: Water ...

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Stomatal Regulation Of Transpiration

Stomatal Regulation of Transpiration Since the aerial surfaces of land plants are in direct contact with atmosphere they face the problem of evaporation, which may lead to death because of dehydration. To overcome this problem their aerial surfaces are covered with thick cuticle. But the cuticle blocks exchange of essential gases, the oxygen and carbon dioxide. To facilitate exchange of ...

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DIATOMS

Occurrence of Diatoms: Diatoms are sea-going. They are both marine and new water. They frame tanish filth on the surface of mud and lakes. Diatoms are bottomless amid spring and pre-winter months. They are for the most part microscopic fishes. Some are connected to the substratum. Vegetative structure: Diatoms are unicellular creatures. A few structures states. Adhesive covers join the ...

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CONSERVATION OF AIR WATER SOIL AND ENERGY

The administration of the earth assets to reestablish and keep up harmony between human prerequisite and different species on the planet is called CONSERVATION. Protection incorporates consistent restoring of sustainable assets. It is additionally connected to preserve non-inexhaustible sources. Air Conservation Air is a few kilometers thick cover of’ atmosphere encompassing the earth. Air is critical common asset. It comprises ...

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Water Logging

The soil which is soaked with water is called water logged soil and this issue is called water logging. Causes of water Logging Pakistan has one of the best canal system. It is made out of 40790 channel miles. Be that as it may, a few imperfections were found. It has made the twin issues of water logging. A portion ...

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