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Q. Describe Palynological Evidence?
Palynology is the study of pollen and spores. The taxonomic characters of pollen grains include wall structure, polarity, symmetry, shape and grain size. In angiosperms pollen grains are of two kinds viz. Monocolpate and tricolpate. Monocotpate pollen grains are boat shaped, have one long germinal furrow and one germinal aperture. This is characteristic of primitive dicotyledons and majority of monowtyledons. According to some palynologists the first flowering plants had monocolpate pollen grains. Tricolpate grains are globose, symmetrical, have three germinal apertures and are characteristic of advanced dicotyledons.
Define Calcium - The Macronutrient? Calcium is an important mineral found mainly in bone and teeth. It is widely distributed in food substances such as milk, cheese, egg yolk,
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Breeding of crops with high levels of minerals, vitamins and proteins is called: 1. Somatic hybridisation 2. Biofortification 3. Biomagnification 4. Micropropagation
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importance of blood tests
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Q. Of which cells is the nervous tissue constituted? How is the generic function of this tissue related to the characteristics of the main cell type that forms it? The nervous
What are lichens? How do fungi participate in this ecological interaction? Lichens are produced by mutualist ecological interaction among fungi and algae or among fungi and cya
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