Question

1)Why are meristems important for the growth of plant after germination?

2)Discuss the hormonal regulation of germination.

Answer 1

have y to divide These tissue in a plant consist of comall Arrow @y Meristematic tissue are cells or group of cells That den sely packed cells. That can keep dividing to form new cells i mnesistematic tisowe use found in many location including near The tips of Root and stem In The Cambion between the xylem and phloem In dicotyledonovo tree and shoulys undes; The epidermis Of di cotyledon o' Trees and shoubs, and £» The pericycle of Root, producing branch Root The two type of meristems are primary meristemp and secondary meri- shem 6 Api CAL MERISTEM : - present at the growing region of the Apex of The plant organs found at the shoot Apex may also be found at the Leaf A piles of developing leaves Farms primary permanent tissue also Iniséme. The longitudinal growth of plant. 3 INTER CALARY MERISTEM: The meristematic tissue that Remain embedded within the permanent tissue mainly between two hodex. They Remain in leaf base or at the lower internodex of growth stem. function of inter creary meristem is to intiale dength wire growth of plan In addition to The primary meristem. CS Scanned with CamScanner

3. LATERAL MERISIEM! present laterally on the axjc of a plantacing longitudinally on the lateral regions of Roots and Stemw- Answey ② Hermones Regulation in germination - ABA/GA patio affects embryo dosmaniy: Dormanly occur when A6A sensitivity is highey. Then HA sensitivity | ABA Absc!sic Acid, 61- libberellin) seed germination ocibey ati loi ABA/ Rato. ABA Control embosyo dos mancy and 117 Controles embryo germination cytokinini affect. The activities of meriste malic. Cello en Root and Shoot Cytokinin are also able to enhance seed germination by alleviation of stresses Such as salinity, heavy metal er VA stimulates germination in pine, grape, mustard cabbage Eke. The CS Scanned with CamScanner