Chantell Tanguy November 27, 2019 Fruit
Pink, which is a mixture of red and white, physically affects us in a positive way. It is relaxing and warm. It is the only lighter shade of red with it’s own name. Other lighter colors are just light green or light blue. Pink is also psychologically a strong color. It represents the continuity of living beings as well as femininity. It has a deeply soothing effect. Too much pink could be tiring and oppressive. It is not suitable to use too much pink in the rooms of shy and introverted children as this is not an energetic color. It can lead to further withdrawal of this type of children. Pink with lesser undertones of red can be easily used in the rooms of active and energetic children. It evokes feelings of warmth and peace.
Darwin explained such male-female differences in his theory of sexual selection in his book The Descent of Man. Once the females begin to select males according to any particular characteristic, such as a long tail or a colored crest, that characteristic is emphasized more and more in the males. Eventually all the males will have the characteristics that the females are sexually selecting for, as only those males can reproduce. This mechanism is powerful enough to create features that are strongly disadvantageous to the males in other ways. For example, some male birds of paradise have wing or tail streamers that are so long that they impede flight, while their brilliant colors may make the males more vulnerable to predators. In the extreme, sexual selection may drive species to extinction, as has been argued for the enormous horns of the male Irish elk, which may have made it difficult for mature males to move and feed.
Red attracts all the attention and distorts the effect of other colors. The lens of the eye must adjust to be able to focus on red. The natural focal point is behind the retina. The dynamism of red is reduced as it turns into pink with the addition of white and gains softer and calmer undertones. For this reason, the use of red on the walls of children’s rooms must be avoided. Due to its strong and warm effect red could be used as an accent in children’s rooms fashioned in beige, blue and brown. Using intense red in the room of your child who uses it to study, play with his/her friends and sleep in, could have a negative effect on your child. Children could feel themselves tense and aggressive in rooms painted in intense red.
Müllerian mimicry was first described by pioneering naturalist Fritz Muller. When a distasteful animal comes to resemble a more common distasteful animal, natural selection favors individuals that even very slightly better resemble the target. For example, many species of stinging wasp and bee are similarly colored black and yellow. Muller’s explanation of the mechanism for this was one of the first uses of mathematics in biology. He argued that a predator, such as a young bird, must attack at least one insect, say a wasp, to learn that the black and yellow colors mean a stinging insect. If bees were differently colored, the young bird would have to attack one of them also. But when bees and wasps resemble each other, the young bird need only attack one from the whole group to learn to avoid all of them. So, fewer bees are attacked if they mimic wasps; the same applies to wasps that mimic bees. The result is mutual resemblance for mutual protection.
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.
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.
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