The formation of annual rings in dicot stem mainly depends upon difference in.
The formation of annual rings in dicot stem mainly depends upon difference in.
The correct option is B Activity of vascular cambium due to seasonal variations
In dicotyledonous stems, during intra stelar
secondary growth, intra fascicular cambium(primary meristem) and inter
fascicular cambium(secondary meristem) joins together and form into a ring of
cambium is called vascular cambium. It is partly primary meristem and partly
secondary meristem. Its activity is continuous and uninterrupted. Due to the
seasonal influence, it produces two types of secondary xylems, spring wood and
autumn wood. Both these woods, together form into a ring of wood called annual
ring or growth ring. Every
annual ring becomes sap wood
and every sap wood gradually transform into heart wood. Due to these
transformations amount of heart wood increases.
so, the
correct option is 'Activity of vascular cambium due to seasonal variations'.
In dicotyledonous stems, during intra stelar secondary growth, intra fascicular cambium(primary meristem) and inter fascicular cambium(secondary meristem) joins together and form into a ring of cambium is called vascular cambium. It is partly primary meristem and partly secondary meristem. Its activity is continuous and uninterrupted. Due to the seasonal influence, it produces two types of secondary xylems, spring wood and autumn wood. Both these woods, together form into a ring of wood called annual ring or growth ring. Every
annual ring becomes sap wood and every sap wood gradually transform into heart wood. Due to these transformations amount of heart wood increases.
so, the
correct option is 'Activity of vascular cambium due to seasonal variations'.
