Bernice Guillou November 27, 2019 Fruit
Chromatophores are special pigment-containing cells that may change their size, but more often retain their original size but allow the pigment within them to become redistributed, thus varying the color and pattern of the animal. Chromatophores may respond to hormonal and or neurobal control mechanisms, but direst responses to stimulation by visible light, UV-radiation, temperature, pH-changes, chemicals, etc. have also been documented. The voluntary control of chromatophores is known as metachrosis. For example, cuttlefish and chameleons can rapidly change their appearance, both for camouflage and for signalling, as Aristotle first noted over 2000 years ago
Pigments are colored chemicals (such as melanin) in animal tissues. For example, the Arctic fox has a white coat in winter (containing little pigment), and a brown coat in summer (containing more pigment), an example of seasonal camouflage (a polyphenism). Many animals, including mammals, birds, and amphibians, are unable to synthesize most of the pigments that color their fur or feathers, other than the brown or black melanins that give many mammals their earth tones. For example, the bright yellow of an American goldfinch, the startling orange of a juvenile red-spotted newt, the deep red of a cardinal and the pink of a flamingo are all produced by carotenoid pigments synthesized by plants. In the case of the flamingo, the bird eats pink shrimps, which are themselves unable to synthesize carotenoids. The shrimps derive their body color from microscopic red algae, which like most plants are able to create their own pigments, including both carotenoids and (green) chlorophyll. Animals that eat green plants do not become green, however, as chlorophyll does not survive digestion.
The main mechanisms to create the resemblances described by Poulton – whether in nature or in military applications – are crypts, blending into the background so as to become hard to see (this covers both special and general resemblance); disruptive patterning, using color and pattern to break up the animal’s outline, which relates mainly to general resemblance; mime sis, resembling other objects of no special interest to the observer, which relates to special resemblance; counter shading, using graded color to create the illusion of flatness, which relates mainly to general resemblance; and counter illumination, producing light to match the background, notably in some species of squid.
When cephalopod molluscs like squid and cuttlefish find themselves against a light background, they contract many of their chromatography, concentrating the pigment into a smaller area, resulting in a pattern of tiny, dense, but widely spaced dots, appearing light. When they enter a darker environment, they allow their chromatography to expand, creating a pattern of larger dark spots, and making their bodies appear dark. Amphibians such as frogs have three kinds of star-shaped chromatophore cells in separate layers of their skin. The top layer contains ’phosphorescent’ with orange, red, or yellow pigments; the middle layer contains ’sophomores’ with a silvery light-reflecting pigment; while the bottom layer contains ’melanophores’ with dark melanin.
Sight starts developing after the 6th month in babies and development continues until the age of 10. Sight is one of the most important senses that connects us to the world. Light and color have a mesmerizing effect on us. On average, the human eye can perceive 150 different colors in visible light. This means a person with normal sight can differentiate between millions of different colors. Color is one of the most important characteristics that can help us assess, estimate and define an object. Each and every person has certain reactions stored in their perceptions and as such the perception of each color addresses the related emotion.
Orange is softer and simpler in comparison to red. It represents happiness, sociability, an extrovert nature as well as joy with the excitement of red and the energy of yellow. It is ideal in overcoming tiredness. It radiates warmth, increases appetite and helps you wake up early in the mornings. Its energy can be lower when saturation is low. It is ideal for use in the rooms of introverted children with problems in socializing. Orange physically represents self confidence, independence and to a certain extent competition. If there is a separate recreation room in your house and your child spends time there with his/her friends you can easily use shades of orange in this room.
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