blue deeper than the blue of the indigo plant

Dyes can also be classified as natural and synthetic dyes. Compounds extracted from plants are called natural dyes. These were used in olden days to color fabrics. Alizarin (red) and indigo (blue) are two examples. Synthetic dyes came into being to provide more v..

Dyes can also be classified as natural and synthetic dyes. Compounds extracted from plants are called natural dyes. These were used in olden days to color fabrics. Alizarin (red) and indigo (blue) are two examples. Synthetic dyes came into being to provide more variet..

It is the phenomenon of splitting of a beam of white light into its constituent colors on passing through prism. The order of colors from the lower end are violet, indigo, blue, green, yellow, orange and re..

1. Chlorine is a greenish yellow gas with a pungent and irritating odor. 2. It turns wet blue litmus paper red and then bleaches it. 3. Colored petals and the leaves of plants can be bleached by it. 4. Chlorine turns wet starch potassium iodide paper blue by displacing..

Sir Isaac Newton, while studying the images of heavenly bodies formed by a lens, found that the image is colored at its edges. In 1665, to investigate this, he performed an experiment using a prism. Newton darkened his room at Trinity College, Cambridge and allowed a beam of sunlight to pass throug..

Newton's Experiment - Dispersion of Light - Sir Isaac Newton, while studying the images of heavenly bodies formed by a lens, found that the image is colored at its edges. In 1665, to investigate this, he performed an experiment using a prism. Newton darkened his room at Trinity College, Cambridge a..

The plant body or thallus of blue green algae ranges from unicellular to multicellular, branched forms. There are no flagella but some members exhibit a movement caused by gliding. fig. 8.7 - Types of Cyanobacte..

Question: What are photoautotrophs? Answer: Those organisms that synthesize food with the help of the light energy of the sun, carbon dioxide and water are called photoautotrophs. The process of synthesis of food in this manner is called photosynthesis. For example - cyanobacteria(b..

Ozone absorbs radiation strongly in the ultraviolet region of the atmospheric spectrum between 220-290 nm. This protects the Earth and its inhabitants from the harmful ultraviolet radiation of the Sun. Without this protective layer, more ultraviolet radiation would reach the surface of the Earth ..

.e., chlorophyll present in the plant. Sometimes red, blue, yellow and brown pigments are found. Blue-green bacteria (cyanobacteria) are included in this group of plants. Examples: Spirogyra, Volvox, Eurodivia, Ulothrix, Cladophora, Ulva, Chlamydomon..