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What is vision? Why is vision important for life on earth?
Vision is the ability of some living beings to perceive, to differentiate and to interpret luminous stimuli.
Vision is significant on earth mainly in the terrestrial and in the superficial aquatic habitats because our planet is intensely exposed to sunlight and thus light and colors become distinguishing factors of objects present in the environment, even at distance. This distinction gave new survival strategies for the organisms, new protection mechanisms against external dangers, new ways to search food and to communicate with other individuals, new types of courting and reproduction behaviours, etc. That is, it formed new possibilities of interaction with the surrounds and enhanced capacity to explore new ecological niches.
Define Hepatopoietic and immune System - geriatric nutrition? Though the circulating red blood cells or the white cell count or platelet number does not normally change with a
Is transpiration the only way through which leaves lose water? Plants do not only lose water as vapor, as by transpiration. The leaves also lose liquid water by a phenomenon c
Define Can or receptacle and Labeling and packing? Can/receptacle - This may be performed manually or by using sophisticated filling machinery. The ratio of liquid to solid in
Q. What are the major structures of the human eye? The major structures of the human eye are the iris, the cornea, the pupil, the ciliary muscles, the crystalline lens and the
What is Lymphatic System in human biology? The lymphatic system maintains fluid balance and serves in protecting the body from disease. The primary organs of the lymphatic syst
Q. Show Artificial systems of classification of plants? Carolus Linnaeus (1707-1778) popularly known as Carl Von Linne was born on May 1707 at Result, a small village in Smalan
The A and B antigens in humans may be found in water-soluble form in secretions, including saliva, of some individuals (Se/Se and Se/se) but not in others (se/se). The population t
Q. Describe Sensory Receptors? Receptor organs can detect external or internal stimuli. They can be classified according to the stimulus to which they respond: • Photorecep
Define the Gel Electrophoresis? Gel electrophoresis is among the most powerful and yet conveniently used methods of macromolecular separation. The gels in common use, polyacryl
C adm iu m Like lead and mercury, cadmium is also non-essential biologically. The industrial use of cadmium in plastic production, electroplating and manufacture of alloys a
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