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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.
In which period of life does the formation of gametes begin in women? The meiosis that forms female gametes begins in the cells of the ovarian follicles before birth. After the
Q.Explain Chemical changes due to spoilage A food item may have apparently looked safe and wholesome for you to eat, but the rumbling and grumbling in your stomach at night may
Class Polychaeta - Classification of Coelom There are mainly marine forms with distinct head, having eyes and tentacles, segments have lateral projections of the body wall ter
How does refrigeration help to stop food from going bad? Western diets are often unhealthy due to they have too much sugar and fat, and not sufficient fibre.
Hi. I would like to know the type of instrument used to analyse the nerve system and how it functions.
In unilocular ovary with a single ovule tje placentation is??
Q. What is the life cycle of the gymnosperms? As all plants they present a diplobiontic life cycle that is alternation of generations with haploid and diploid stages and the la
Explain about Urinary system Urinary system provides us with the service of disposing the waste products carried by blood. This function is also known as excretion.
Leishmanias – Flagellates Species of the genus Leishmania are parasites of mammals including man. Leishmanias infections occur over wide regions of the world from Asia, the ne
Define Introduction of Lipids? You have studied that lipids together with carbohydrates and proteins are important as food for many animals. Lipids include neutral fats, phosph
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