SI Worksheet 2 answers - BY 124 SI WORKSHEET 2 Terms Double...

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BY 124 SI WORKSHEET 2 Terms Double’Fertilization’ ’ Two’sperm’cells’enter’the’female’gametophyte,’one’fertilizes’the’egg’(diploid’zygote)’and’the’other’ fuses’with’ the’ two’nuclei’in’the’large’central’cell’of’the’female’gametophyte,’producing’a’ triploid cell .’ Taproot’ ’ Root’system’consisting’of’a’main’vertical’taproot’which’develops’from’the’embryonic’root.’Gives’rise’to’ lateral’roots’or’branch’roots.’Can’penetrate’deeper’into’the’ground’and’adapt’to’deeper’sources’of’ water.’ ’ Nodes’ ’ The’points’on’a’stem’wh ere’leaves’are’attached.’Internodes’are’the’spaces’between’nodes’ Ground’tissue’system’(2’types) Tissue’that’is’neither’v ascular’nor’dermal.’Main’role’is ’ nutrient’storage’and’photosynthesis.’ (parenchyma’cells).’2’types:’pith’ –’ ground’tissue’that’is’interna l’to’the’vascular’tissue.’Cortex’ –’ ground’ tissue’that’is’external’to’the’vascular’tissue.’ Apical’dominance ’ the’inhibition’of’axillary’buds’by’apical’buds.’Proximity’of’axillary’buds’to’apical’buds’is’responsible’for’ their’dormancy .’ If’an’animal’eats’the’e nd’of’a’shoot’or’the’sun’doesn±t’reach’the’top’but’reaches’the’ sides,’axillary’buds’brea k’their’dormancy’(example:’pruning’trees)’ Parenchyma’cells’ ’ Primary’cell’walls’are’thin’and’flexible,’lack’secondary’cell’wall.’Large’central’vacuole.’Least’specialize
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