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Stems transport liquids
(a) Cut about 2 cm from the end of stems of celery and place them in cold water for about an hour to freshen. Next place the stems in dishes having red ink and let them stand for various hours. Observe the Stalks carefully. Cut them up into various Short lengths and observe where the ink has moved upward in the stem. Try to pull some of the tubes out of the celery stems.
(b) Cut about 2 cm from the end of the flower stalks of white carnations. The cutting Should be done with a sharp knife and under water. Place the stems with flowers in glasses having different shades of food colouring or coloured ink. Observe after various hours.
Q. What is pus? Pus is a residual of the inflammatory reaction and it contains a mixture of fragments of dead infectious agents (generally bacteria), leukocytes and tissues.
1. Many bacterial genes show adaptive regulation of their transcription. a) How is the lac operon regulated by the sigma factor? b) How is the lac operon regulated by lactose
Define Future Projections in the Field of Public Nutrition? We discussed earlier that the field of public nutrition has existed for a long time, although not by this name. A he
Who did EPA consult with outside of the Agency in making this rule? EPA consulted with many agencies, organizations, and individuals in the process of finalizing the plant- inc
Define about the Cellulose acetate electrophoresis (CAE)? If the hydroxyl groups in cellulose are reacted with acetic anhydride, cellulose is acetylated to form the raw materia
Explain about the Biosensors and Caramelization? Biosensors: A device that utilizes biological materials to monitor the presence of several chemicals in a substance. Carame
How does sexual reproduction occur in bacteria? How different are the modalities of bacterial sexual reproduction? Sexual reproduction happens when bacteria incorporate genetic
Classification of plants and animals
HARD Y - WEINBERG LAW - Proposed by G.H. Hardy and W. Weinberg in 1908 independently. The law states "the frequency of genes or alleles in a population remains constant
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