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Q. Show the Paleobotanical Evidence?
Paleobotany deals with the study of fossil records of plants and animals. New techniques and approaches to the study of fossil flowering plants provide taxonomic information. Paleobotany uses microfossils such as pollen or macrofossils of leaves, stems and other plant parts as source of data. Recent collection of well preserved angiosperm flowers from Eocene sediments of the southern United States and from kansas confirm the presence of diversified representatives of the present day "Amentiferae line" by middle Eocene time and their adaptation for wind pollination. Flowers and inflorescences with structural features allowing pollination by beetles, flies, beas, and butter flies were still in existence by middle Eocene. An extraordinary data source has been provided by the organic chemical profiles of miocene leaf Specimen s 'of Acer, Celtis, Ouercus, ulmus and zelkova. A high degree of correlation between chemical compounds of the fossils and those of modern species was found. Data provided by Paleobotany allow taxonomists to deal with the facts of the fossil record about angiosperms and their possible progenitors. However, the available data is still too limited for the construction of a valid general phylogenetic scheme.
A v i a n infectious bronchitis (IB) An acute, highly contagious respiratory disease of chicken caused by a member of the family Coronaviridae, IB was first recognized in I
Q. What are few mechanisms by which pathogenic bacteria cause diseases? And why is this knowledge important? Pathogenic bacteria have characteristics called as virulence factor
Describe the monomer unit of a protein and how monomer units are assembled into peptides.
Q. Causes of Diabetic Ketoacidosis? The causes of Diabetic Ketoacidosis (DKA) are the following: - Missing of insulin injection - Infection - Trauma (injury) - Myoc
What is Combination therapy Combination therapy - Use of combination therapy for treatment of immunosuppressed patients with invasive aspergillosis (IA), which has a high morbi
You have accidentally mixed up 3 beakers of solutions. One is water. One is pure methanol. One is pure phosphoric acid. What would be a very wrong way to tell the difference betwee
What is Central Shunt in Palliative Operations? When the pulmonary artery branches are small, an interposition graft could be used as a shunt between main pulmonary artery and
Explain the Principle or Theory of biuret method? If a strongly alkaline solution of Biuret is heated with very dilute copper sulphate, a violet colour is obtained. The substan
method of digestion in porifera
Contagious bovine pleuropneumonia (CBPP) This is a highly fatal disease of cattle and of major economic importance in certain tropical countries. It also affects buffaloes, bis
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