Question

11. First event during secondary growth in dicotroot is
O Redifferentiation of secondary xylem oninner side of cambium
O Dedifferentiation of conjunctive parenchyma O Dedifferentiation of pericycle opposite to protoxylem
O Differentiation of cortical cells


pls give me the answer by tonight​

Answer 1

Secondary growth in dicotroot is  Differentiation of cortical cells

Explanation:

Redifferentiation of secondary xylem oninner side of cambium:

• Secondary xylem, secondary phloem, secondary cortex (phelloderm), and cork are all products of redifferentiation in plants (phellem).

Dedifferentiation of conjunctive parenchyma:

• Conjunctive tissue is a collection of parenchymatous or sclerenchymatous cells found in roots between the xylem and the phloem.
• In dicot roots, conjunctive tissue cells are parenchymatous, whereas in monocot roots, they are parenchymatous in younger tissues and sclerenchymatous in older roots.

Dedifferentiation of pericycle opposite to protoxylem:

• Pericycle cells, frequently opposite a protoxylem group, become meristematic and continue to divide periclinally and anticlinally.
• The Vascular Connection between the Lateral Root and the Parent Stele is shown.

Differentiation of cortical cells

• PSC differentiation toward cortical excitatory neurons has been successfully accomplished in mouse and human cells by forming three-dimensional epithelial structures called rosettes, which contain early neuroepithelial cells (NEP) that progressively produce the neuronal types typical of the different cortical layers.