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Q. What is embryonic sac? Which are the cells that form the embryonic sac? What are their ploidies?
The embryonic sac is female gametophyte of angiosperms.
The embryonic sac is collected of three cells that remain next to the micropyle, two lateral synergids and the central oosphere (egg); one binucleated cell, the polar nuclei, is placed in the central region; three antipodal cells stay in the opposite side to the micropyle. Ever since all these cells come by mitosis from the functional megaspore they are haploid (n).
2.?In order to increase muscular force production, muscular contractions may be modulated in two ways. Explain.
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What are the reasons of Food Processing? The reasons for food processing may vary, but the main objectives are to: Preserve the nutritive quality of food by preventing th
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What is the difference between aerobic and anaerobic beings? Aerobic organisms are those whose cells do not survive without oxygen as they depend on aerobic cell respiration to
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