megasporogenesis

[ meg-uh-spawr-uh-jen-uh-sis, -spohr- ]

/ ˌmɛg əˌspɔr əˈdʒɛn ə sɪs, -ˈspoʊr- /

noun Botany.

the formation and development of megaspores.

Words nearby megasporogenesis

megascopic, megasporangium, megaspore, megaspore mother cell, megasporocyte, megasporogenesis, megasporophyll, megass, megastar, megastructure, megathere

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for megasporogenesis

megasporogenesis

[ mĕg′ə-spôr′ə-jĕn′ĭ-sĭs ]

The formation of megaspores inside the ovules of seed plants. A diploid cell in the ovule, called a megasporocyte or a megaspore mother cell, undergoes meiosis and gives rise to four haploid megaspores. In most plants, only one of the megaspores then goes on to develop into a megagametophyte within the ovule, while the other three disintegrate. In the ovules of angiosperms, megasporogenesis takes place within a structure called a nucellus, and it is the megaspore farthest from the micropyle of the ovary that survives.

单词	megasporogenesis
释义	megasporogenesis [ meg-uh-spawr-uh-jen-uh-sis, -spohr- ] / ˌmɛg əˌspɔr əˈdʒɛn ə sɪs, -ˈspoʊr- / noun Botany. the formation and development of megaspores. Words nearby megasporogenesis megascopic, megasporangium, megaspore, megaspore mother cell, megasporocyte, megasporogenesis, megasporophyll, megass, megastar, megastructure, megathere Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Scientific definitions for megasporogenesis megasporogenesis [ mĕg′ə-spôr′ə-jĕn′ĭ-sĭs ] The formation of megaspores inside the ovules of seed plants. A diploid cell in the ovule, called a megasporocyte or a megaspore mother cell, undergoes meiosis and gives rise to four haploid megaspores. In most plants, only one of the megaspores then goes on to develop into a megagametophyte within the ovule, while the other three disintegrate. In the ovules of angiosperms, megasporogenesis takes place within a structure called a nucellus, and it is the megaspore farthest from the micropyle of the ovary that survives. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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