Yolanthe Nguyen November 15, 2019 Fruit
There are several separate reasons why animals have evolved colors. Camouflage enables an animal to remain hidden from view. Animals use color to advertise services such as cleaning to animals of other species; to signal their sexual status to other members of the same species; and in mimicry, taking advantage of the warning coloration of another species. Some animals use flashes of color to divert attacks by startling predators. Zebras may possibly use motion dazzle, confusing a predator’s attack by moving a bold pattern rapidly. Some animals are colored for physical protection, with pigments in the skin to protect against sunburn, while some frogs can lighten or darken their skin for temperature regulation. Finally, animals can be colored incidentally. For example, blood is red because the heme pigment needed to carry oxygen is red. Animals colored in these ways can have striking natural patterns.
Countershading was first described by the American artist Abbott Handerson Thayer, a pioneer in the theory of animal coloration. Thayer observed that whereas a painter takes a flat canvas and uses colored paint to create the illusion of solidity by painting in shadows, animals such as deer are often darkest on their backs, becoming lighter towards the belly, creating (as zoologist Hugh Cott observed) the illusion of flatness, and against a matching background, of invisibility. Thayer’s observation ”Animals are painted by Nature, darkest on those parts which tend to be most lighted by the sky’s light, and vice versa” is called Thayer’s Law.
The yellow in green lends an elegant character to this color while the blue renders it warm. Light green reduces pressure. Symbolically green represents the power of nature and life and as such it is considered to be the most natural, relaxing, calming and balanced color. Red signals “stop” there is danger, while green signals “safe crossing” and thus reduces the tension in the body. Green can be used with ease in nurseries, and in children’s and teenagers’ rooms. The use of color green in nurseries will ensure a peaceful and comfortable transition into sleep for the baby. When green is used with more undertones of yellow, it clarifies the mind, and therefore can be used in teenagers’ rooms to foster success in school. The serenity of blue and the mental clarity achieved with yellow will have a good impact on them.
Aggregate fruits form from single flowers that have multiple carpels which are not joined together, i.e. each pistil contains one carpel. Each pistil forms a fruitlet, and collectively the fruitlets are called an etaerio. Four types of aggregate fruits include etaerios of achenes, follicles, drupelets, and berries. Ranunculaceae species, including Clematis and Ranunculus have an etaerio of achenes, Calotropis has an etaerio of follicles, and Rubus species like raspberry, have an etaerio of drupelets. Annona have an etaerio of berries.
Blue, in all respects is the total opposite of red. While blue is transparent and wet in appearance red is opaque and dry. Psychologically the cold and comforting nature of blue is the polar opposite of the warmth and excitement of red. In contrast to red, blue reduces body temperature, blood pressure and pulse rate. Blue evokes feelings of contentment, spaciousness and comfort due to being the color of the sky and ocean as well. As the shade of blue approaches black with the addition of black it may become depressive and melancholic. Blue is a color that is widely recommended for use in children’s rooms. Especially in nurseries, the use of blue helps the baby’s easy and peaceful transition into sleep. It can also be comfortably used with active and vibrant children due to its calming effect. As is the case with all other colors, you can accessorize your room in red and yellow when you choose to paint your walls in blue.
As the ovules develop into seeds, the ovary begins to ripen and the ovary wall, the pericarp, may become fleshy (as in berries or drupes), or form a hard outer covering (as in nuts). In some multi seeded fruits, the extent to which the flesh develops is proportional to the number of fertilized ovules. The pericarp is often differentiated into two or three distinct layers called the exocarp (outer layer, also called epicarp), mesocarp (middle layer), and endocarp (inner layer). In some fruits, especially simple fruits derived from an inferior ovary, other parts of the flower (such as the floral tube, including the petals, sepals, and stamens), fuse with the ovary and ripen with it. In other cases, the sepals, petals and/or stamens and style of the flower fall off. When such other floral parts are a significant part of the fruit, it is called an accessory fruit. Since other parts of the flower may contribute to the structure of the fruit, it is important to study flower structure to understand how a particular fruit forms.
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