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Osmotic Function - Essential Elements
Plant cells generally contain mineral ions 10 to 1000 times higher in concentration than the surrounding soil. That is why water enters the cells by osmosis and builds up turgor. You know that turgor maintains the shape and size of non-rigid plant parts such as leaves. Potassium is a key ion in this respect. Changes in its concentration in guard cells affect turgor and thus result in opening and closing of stomata. Turgor is also essential for the growth of plant cells.
Q. What are fossil fuels? The Fossil fuels like coal, oil and gas, form when organic material is preserved from the complete action of decomposers, generally buried deep and un
Dysrhythmias Usually occur during the initial 24-72 hours, but may occur later on also. The causes may be ventricular irritability due to manipulations of heart durin
what is the bioindicator of water pollution.
Q. What are the hormones secreted by the thyroid gland? What are their functions? The thyroid secretes the triiodothyronine (T3), hormones thyroxine (T4) and calcitonin. T3
Q. Define Pulmonary angiography? Pulmonary angiography is the angiographic opacification of the main and pulmonary artery and its branches. By radiographic techniques, it is po
Explain the Principle of Development The final guiding principle is that assessment involves the measure of change, or development, across multiple levels of analysis. Developm
C4 plants have higher net photosynthetic rate because a.they have no photorespiration b.can photosynthesise in low in
Q. What is genetic engineering? Genetic engineering, It is also known as molecular cloning or gene cloning, is artificial recombination of nucleic acid molecules in a test tube
List three human activities which could cause the loss of a species. Human activities which threaten species with extinction are: (i) hunting of individual species, (ii) over-
Dendrology : This is the study of all kinds of trees. Dendrology we can also say it xylology it is the science or study of wooded plants like trees, shrubs, and lianas. There is no
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