Question

is the process of expansion of epiderms in all
direction during development.​

Answer 1

Answer:

Epidermis differentiation and maintenance are essential for plant survival. Constant cross‐talk between epidermal cells and their immediate environment is at the heart of epidermal cell fate, and regulates epidermis‐specific transcription factors. These factors in turn direct epidermal differentiation involving a whole array of epidermis‐specific pathways including specialized lipid metabolism necessary to build the protective cuticle layer. An intact epidermis is crucial for certain key processes in plant development, shoot growth and plant defence. Here, we discuss the control of epidermal cell fate and the function of the epidermal cell layer in the light of recent advances in the field.

HOPE THIS ANSWER HELPS YOU

PLS MARK ME AS A BRAINLIESTS...

Answer 2

Answer:

Cell elongation is the process of expansion of epiderms in all directions during development.​            

Explanation:

• Growth is regarded as the most fundamental and conspicuous characteristic of living beings.  

• We can define growth as an irreversible permanent increase in the size of an organ or its parts or an individual cell.

• For example, expansion of the epidermis.

• The cells, in the elongation phase, represent cell expansion (due to turgidity), enlargement (cell differentiation) and increased vacuolation.

• In the epidermis, cells exhibiting fast an-isotropic growth or elongation, in general, have their cortical microtubules parallel to each other and parallel to the micro-fibril orientation.

• In leaf epidermis cells that expand bidirectionally, microtubules are parallel to each other but with varying orientations, while the overlaying walls exhibit a net random orientation.

• Therefore, we can say that net cellulose orientation of the cell walls is always the preferred indicator of mechanical anisotropy of the wall, relevant for cell expansion and thus also for plant growth.

#SPJ3