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Q. Illustrate Physiological Evidence ?
Physiological and biochemical evidence is providing data of increasing importance to plant systematic. Recently, it has become apparent that a syndrome of anatomical and physiological features related to a high efficiency carbon fixation process occurs in a large number of plants. This syndrome has been called the Kranz syndrome or C4 photosynthesis. In algae, mosses, most ferns, gymnosperms and many families of flowering plants C3-photosynthesis is the only known carbon fixation cycle. C4-photosynthesis occurs in approximately 10 unrelated families of monocotyledons and dicotyledons. Krariz syndrome has proved useful in characterising Panicum and . other taxa in the grass family. In the dicotyledon genus Euphorbia (Euphorbiaceae) C3, C4 and CAM (Crassulaceas Acid Metabolism) species are known. Both C3 and C4 carboxylation occurs in zygophyllum (zygophyllaceae) and in Atriplex (chenopodiaceae).
Q. In which kind of animals does the placenta exist? What is its major function? True placenta is present in placental mammals. The placenta is formed from the chorion of th
Phylum Arthropoda : (8,00,000 to 10,00,000 species) They are known as 'jointed footed' animals. The appendages are paired, and jointed with chitinous exoskeleton, varied and wi
DIFFERENCE S BETWEEN HYPOTHESIS AND THEORY - 1. Hypothesis It is a reasoned or educated guess about a 1.
Two parents who are each known to be carriers of an autosomal recessive allele have four children. None of the children has the recessive condition. What is the probability that
Define Decreased oxygen availability at high altitude (Hypobaric hypoxia)? The governing biophysical factor at high altitude is decrease in barometric pressure with increase in
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Define Nutritional Requirement and Dietary Modifications in the Diet of the Elderlu? The nutritional status influences the age-related rate of functional decline in many organ
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describe in details charateristics of two sub phyla of phylum anthropoda
What is the utility of fungi for some industries? Fungi are industrially used in the production of fermented beverage, cheese, bread etc. Some fungi are very significant for th
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