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Microsporogenesis and Microgametogenesis in Plants | Essay | Embryology

Read this essay to learn about the process of microsporogenesis and microgametogenesis in angiospermic plants. Development of Microspore Mother Cell and Microsporogenesis (Development of Micros­pores i.e., Pollen Grain): Microspores i.e., the pollen grains, are developed inside microsporangia. The microsporangia are developed inside the corners of the 4-lobed anther. Young anthers are more or less oblong in shape in section and [...]

By |2017-04-11T09:15:47+00:00April 11, 2017|Plants|Comments Off on Microsporogenesis and Microgametogenesis in Plants | Essay | Embryology
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Megasporogenesis and Megagametogenesis in Plants | Embryology | Biology

Read this essay to learn about the process of megasporogenesis and megagametogenesis in plants, explained with the help of suitable diagrams. Development of Megaspore Mother Cell: The ovule develops as multicellular placen­tal outgrowth including the epidermal and a number of hypodermal cells. With further deve­lopment, this gives rise to nucellus and one or two integuments from its basal region. In [...]

By |2017-04-11T09:15:47+00:00April 11, 2017|Plants|Comments Off on Megasporogenesis and Megagametogenesis in Plants | Embryology | Biology
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Structural Development of Root and Shoot Apices | Essay | Botany

Read this essay to learn about the theories of structural development of root and shoot apices:- 1. Apical Cell Theory 2. Histogen Theory 3. Tunica-Corpus Theory. Essay # 1. Apical Cell Theory: In cryptogams like algae, bryophytes and pteridophytes the solitary apical cell found to be constantly present leads to the whole process of growth. Many resear­chers believe that the [...]

By |2017-04-11T09:15:46+00:00April 11, 2017|Root|Comments Off on Structural Development of Root and Shoot Apices | Essay | Botany
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