�ݺ�ߣshows by User: ArnoldDamaso

�ݺ�ߣshows by User: ArnoldDamaso / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: ArnoldDamaso / Fri, 12 Aug 2016 00:58:22 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: ArnoldDamaso Seed and bud dormancy /slideshow/seed-and-bud-dormancy-64924825/64924825 seedandbuddormancy-160812005822
One important function of most seeds is delayed germination, which allows time for dispersal and prevents germination of all the seeds at the same time. The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense. Generally plants or plant structures, in order to overcome or survive against hostile environmental conditions undergo a period of dormancy with suitable modifications. In lower plants production of endospores, zygospores, auxospores, akinetes, etc, are some of the methods involved in tiding over unfavorable conditions Angiosperms produce seeds within the ovary and ovary itself develops into a fruit. In Gymnosperms only seeds develop. ]]>
One important function of most seeds is delayed germination, which allows time for dispersal and prevents germination of all the seeds at the same time. The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense. Generally plants or plant structures, in order to overcome or survive against hostile environmental conditions undergo a period of dormancy with suitable modifications. In lower plants production of endospores, zygospores, auxospores, akinetes, etc, are some of the methods involved in tiding over unfavorable conditions Angiosperms produce seeds within the ovary and ovary itself develops into a fruit. In Gymnosperms only seeds develop. ]]> Fri, 12 Aug 2016 00:58:22 GMT /slideshow/seed-and-bud-dormancy-64924825/64924825 ArnoldDamaso@slideshare.net(ArnoldDamaso) Seed and bud dormancy ArnoldDamaso One important function of most seeds is delayed germination, which allows time for dispersal and prevents germination of all the seeds at the same time. The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense. Generally plants or plant structures, in order to overcome or survive against hostile environmental conditions undergo a period of dormancy with suitable modifications. In lower plants production of endospores, zygospores, auxospores, akinetes, etc, are some of the methods involved in tiding over unfavorable conditions Angiosperms produce seeds within the ovary and ovary itself develops into a fruit. In Gymnosperms only seeds develop. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/seedandbuddormancy-160812005822-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> One important function of most seeds is delayed germination, which allows time for dispersal and prevents germination of all the seeds at the same time. The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense. Generally plants or plant structures, in order to overcome or survive against hostile environmental conditions undergo a period of dormancy with suitable modifications. In lower plants production of endospores, zygospores, auxospores, akinetes, etc, are some of the methods involved in tiding over unfavorable conditions Angiosperms produce seeds within the ovary and ovary itself develops into a fruit. In Gymnosperms only seeds develop.

Seed and bud dormancy from Ar R Ventura

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0 CS_701_Nitrate Assimilation by arnold_damaso /slideshow/cs701nitrate-assimilation-by-arnolddamaso/56807146 cs701nitrateassimilationarnolddamaso-160108012300
Nitrate assimilation is the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment. Organisms like plants, fungi and certain bacteria that cannot fix nitrogen gas (N2) depend on the ability to assimilate nitrate or ammonia for their needs. Plants like castor reduce a lot of nitrate in the root itself, and excrete the resulting base. Some of the base produced in the shoots is transported to the roots as salts of organic acids while a small amount of the carboxylates are just stored in the shoot itself. However, about 99% of the organic nitrogen in the biosphere is derived from the assimilation of nitrate. NH4+ is formed as an end product of the degradation of organic matter, primarily by the metabolism of animals and bacteria, and is oxidized to nitrate again by nitrifying bacteria in the soil. Thus a continuous cycle exists between the nitrate in the soil and the organic nitrogen in the plants growing on it. While nearly all the ammonia in the root is usually incorporated into amino acids at the root itself, plants may transport significant amounts of ammonium ions in the xylem to be fixed in the shoots. This may help avoid the transport of organic compounds down to the roots just to carry the nitrogen back as amino acids. ]]>
Nitrate assimilation is the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment. Organisms like plants, fungi and certain bacteria that cannot fix nitrogen gas (N2) depend on the ability to assimilate nitrate or ammonia for their needs. Plants like castor reduce a lot of nitrate in the root itself, and excrete the resulting base. Some of the base produced in the shoots is transported to the roots as salts of organic acids while a small amount of the carboxylates are just stored in the shoot itself. However, about 99% of the organic nitrogen in the biosphere is derived from the assimilation of nitrate. NH4+ is formed as an end product of the degradation of organic matter, primarily by the metabolism of animals and bacteria, and is oxidized to nitrate again by nitrifying bacteria in the soil. Thus a continuous cycle exists between the nitrate in the soil and the organic nitrogen in the plants growing on it. While nearly all the ammonia in the root is usually incorporated into amino acids at the root itself, plants may transport significant amounts of ammonium ions in the xylem to be fixed in the shoots. This may help avoid the transport of organic compounds down to the roots just to carry the nitrogen back as amino acids. ]]> Fri, 08 Jan 2016 01:23:00 GMT /slideshow/cs701nitrate-assimilation-by-arnolddamaso/56807146 ArnoldDamaso@slideshare.net(ArnoldDamaso) CS_701_Nitrate Assimilation by arnold_damaso ArnoldDamaso Nitrate assimilation is the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment. Organisms like plants, fungi and certain bacteria that cannot fix nitrogen gas (N2) depend on the ability to assimilate nitrate or ammonia for their needs. Plants like castor reduce a lot of nitrate in the root itself, and excrete the resulting base. Some of the base produced in the shoots is transported to the roots as salts of organic acids while a small amount of the carboxylates are just stored in the shoot itself. However, about 99% of the organic nitrogen in the biosphere is derived from the assimilation of nitrate. NH4+ is formed as an end product of the degradation of organic matter, primarily by the metabolism of animals and bacteria, and is oxidized to nitrate again by nitrifying bacteria in the soil. Thus a continuous cycle exists between the nitrate in the soil and the organic nitrogen in the plants growing on it. While nearly all the ammonia in the root is usually incorporated into amino acids at the root itself, plants may transport significant amounts of ammonium ions in the xylem to be fixed in the shoots. This may help avoid the transport of organic compounds down to the roots just to carry the nitrogen back as amino acids. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/cs701nitrateassimilationarnolddamaso-160108012300-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> Nitrate assimilation is the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment. Organisms like plants, fungi and certain bacteria that cannot fix nitrogen gas (N2) depend on the ability to assimilate nitrate or ammonia for their needs. Plants like castor reduce a lot of nitrate in the root itself, and excrete the resulting base. Some of the base produced in the shoots is transported to the roots as salts of organic acids while a small amount of the carboxylates are just stored in the shoot itself. However, about 99% of the organic nitrogen in the biosphere is derived from the assimilation of nitrate. NH4+ is formed as an end product of the degradation of organic matter, primarily by the metabolism of animals and bacteria, and is oxidized to nitrate again by nitrifying bacteria in the soil. Thus a continuous cycle exists between the nitrate in the soil and the organic nitrogen in the plants growing on it. While nearly all the ammonia in the root is usually incorporated into amino acids at the root itself, plants may transport significant amounts of ammonium ions in the xylem to be fixed in the shoots. This may help avoid the transport of organic compounds down to the roots just to carry the nitrogen back as amino acids.

CS_701_Nitrate Assimilation by arnold_damaso from Ar R Ventura

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0 https://cdn.slidesharecdn.com/profile-photo-ArnoldDamaso-48x48.jpg?cb=1664962585 https://cdn.slidesharecdn.com/ss_thumbnails/seedandbuddormancy-160812005822-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/seed-and-bud-dormancy-64924825/64924825 Seed and bud dormancy https://cdn.slidesharecdn.com/ss_thumbnails/cs701nitrateassimilationarnolddamaso-160108012300-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/cs701nitrate-assimilation-by-arnolddamaso/56807146 CS_701_Nitrate Assimil...