Summary: Biology Of Plants

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  • 1 Week 1

    This is a preview. There are 1 more flashcards available for chapter 1
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  • 1.1.1 College 1: Plant body

    This is a preview. There are 20 more flashcards available for chapter 1.1.1
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  • Wat is epigeïshce kieming?

    Epi = boven
    Strekking hypocotyl waardoor cotylen bovengronds komen.
  • 1.1.2 Raven hst 22

    This is a preview. There are 44 more flashcards available for chapter 1.1.2
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  • How does a seed provide a plant with significant selective advantages over plants lacking seeds?

    The seed enhances the plant's ability to survive adverse environmental conditions and facilitates dispersal of the species.
  • How does the formation of the embroyo begin?

    With the division of the zygote within the embryo sac of the ovule.  This division is asymmetrical and transverse with regards to the long axis of the zygote.
  • What does the apical-basal polarity of the embryo look like after the division of the zygote?

    I = the upper pole consisting of a small apical cell, gives rise to most of the mature embryo

    II = the lower pole, consisting of a large basal cell, produces a stalklike suspensor
  • What is the first expression of radial polarity during embryogenesis?

    When changes in the internal structure of the embryo proper result in the initial development of the concentrically arranged tissue systems.
  • What is the ground meristem?

    The precursor of the ground tissue, surrounds the procambium.
  • What are the primary meristems?

    The protoderm, ground meristem and procambium.
  • What happens during the globular stage?

    The stage of embryo development preceding cotyledon development. 

    The development fo the cotyledons, may begin either during or after the time when the procambium becomes visible.
  • What is the heart stage?

    As the cotyledons develop in eudicots, the globular embryo gradually assumes a two-lobed form, or heart shape.
  • When does the torpede stage of embryo development occur?

    As the cotyledons and axis elongate and the primary meristems extend along with them.

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