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Chemical Stress - Atmospheric imbalances
At least two components of the environment, oxygen and carbon dioxide that plants require are predominantly in the gaseous form. As you have learnt, atmospheric nitrogen can be used by nitrogen-fixing bacteria, some prokaryotic algae and plant-bacterial symbiont. The biological cycling of these gases keeps their overall availability buffered within a reasonably stable range. Yet, intensive industrial activities that involve emission of one of these gases or high levels of the oxides of carbon, nitrogen and sulphur has visible effects on the performance of most plant species.
Explain about the Zinc Toxicity? Only a few occurrences of acute zinc poisoning have been reported. The toxicity signs are nausea, vomiting, diarrhoea, fever and lethargy and h
NEO-LAMARCKISM Modem modified form of Lamarck theory is regarded as Neo-Lamarckism. Mc Dougall (1938) found that time taken for training the mice was reducing gradually
A fruit fly has four pairs of chromosomes in its cells. At meiosis, how many different combinations of maternal and paternal chromosomes are possible in the gametes?
Explain Increased Fibrinogen Levels and Other Thrombogenic Factors ? Thsombogenesis is an important component in the pathological process of atherosclerosis and so it is not s
What are some examples of organisms belonging to this phylum? Please name them.
Q. Why is there a "popping" sound when you crack your knuckles, and is it dangerous to crack them? Some reasons have been given for the characteristic "popping" sound associate
Q. What does radial symmetry means? What is the kind of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry? Radi
How sugar play a major role in preservation? In so many products, sugars play a major role in preservation. The addition of monosaccharides, like glucose or fructose, to jams a
Which parts of the eye refract ('bend') the light in such a way as to form an image on the retina? The curved surface of the cornea, and the aqueous humour enclosed by it,
What is capillarity? How this phenomenon is chemically explained? What is the relevance of capillarity for water transport in plants? Capillarity is the phenomenon by which
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