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Question : What are meristems ? With a neatlabelled diagram , explainthe differenttypesof meristemsbasedon theirpositionin the plant body .

Answer»

Solution :Formativetissuefoundin the growingregions of the plant bodysuchare root TIP, shoottip andbranch tip is referredto , as meristermatictissue .
It comprisesof UNDIFFERENTIATED massof rapidlydividingcells.
Basedon the positionin the plantbody,meristemsare classified intothreetypes:
(a) Apicalmeristem.
(b) Intercalarymeristem.
( C) Lateralmeristem.
(c) Lateralmeristem.
(a)Apicalmeristem :Meristemtic tissuefound at theapicesof the root and stemis calledApical meristem. They cause linearincrease of the plantbody i.e,primarygrowth .
(b)Intercalarymeristem :Meristematic TISSUE foundin betweenthe permanenttissues eitherat the baseof the internodes or ATTHE leavesis referred to asintercalarymeristem.It isresponsible for theelongationof theplant body i.e,primarygrowth .
(C) Lateralmeristem : Theseare foundalongthe lateral sidesofthe stemand root.Vascularcambiumand cockcambiumare theexamplesfor lateral meristem.


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