Tag Archives | embryology

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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16 Main Embryological Stages of Embryo | Biology

Some embryological stages of embryo are: Stage # 1. T.S. Young (Developing) Anther: 1. It is a multicellular, four-cornered structure, surrounded by a layer of epidermis. 2. In each comer develops one or more archesporial initials. 3. These initials divide by a periclinal wall into outer primary parietal cell and inner primary sporogenous cell. 4. Primary parietal cell divides periclinally [...]

By |2016-10-20T07:46:23+00:00October 20, 2016|Embryology|Comments Off on 16 Main Embryological Stages of Embryo | Biology
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