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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.
Fluorescence Microscopy Certain compounds when exposed to short wavelength radiations, e.g., UV and X-rays. absorb and emit energy as light of a longer wavelength. This process o
The Term "Green House" effect was first introduced by j. Fourier in 1827. The green house effects are the rise in temperature of earth because certain gases in the atmosphere (CO2,
You work with flies and you have identified a single gene that can cause flies to either have two heads or one head (depending on the genotype of this gene), and that is all you kn
Explain Leaf Primordia ? In contrast to the root, which produces branches from meristematic tissue called the pericycle, shoots have areas of meristematic tissues called nodes
1. Hazard Is An Extreme Event Whereas Disaster Is Its Consequence. 2. A hazard can occur without human interference but it may become a disaster on account of careless
Mechanisms that Affect the Heart Rate Two different mechanisms affect the heart rate. Nerve impulse to the pacemaker region and hormonal influences. A branch of the vagues ner
Q. Principles of Binomial Nomenclature? There are certain, basic principles of binomial nomenclature which are as follows: i) Different nomenclatural systems are independent
Natural selection is a process which directs all biological evolution. It is a process that directs genetic changes which when proved to be adapted to the environment are retaine
Regulation of pyruvate kinase, pyruvate carboxylase and PEP carboxykinase A) In liver, pyruvate kinase is inhibited by high levels of ATP and alanine so which glycolysis
Differance between pulsus bigerniny or trigeminy and presence of bruit ? Pulsus bigerniny or trigeminy: After every 2nd or 3rd beat respectively there will be a longer inter
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