Question

Hypodermis is _________ in sunflower stem and _________ in maize stem.
A. Parenchymatous, Collenchymatous
B. Collenchymatous, Sclerenchymatous
C. Sclerenchymatous, Collenchymatous
D. Sclerenchymatous, Parenchymatous

Answer 1

Hint: With some regions of secondary thickening, the cells possess thin primary walls. It offers additional mechanical and structural assistance, particularly in places of new growth. Typically, the cells are alive and only have a thick primary cell wall composed of cellulose as well as pectin.

Complete answer:
First we should know about hypodermis to answer this question. A layer directly just under the dermis is the hypodermis (also known as the subcutaneous layer as well as superficial fascia) that connects the skin to the underlying fascia of the muscles and bones.
Now, let us find the solution from the options-
In plants, parenchyma is a tissue usually consisting of living cells which are thin-walled, unspecialized in form, and thus flexible to different functions with distinction. Thus, option A is not the correct option.
Hypodermis is a distinctive coating with some dicot as well as monocot stems with mechanical tissue. It is collenchymatous and is found in 3-4 layers. It gives mechanical assistance and elasticity, and holds food as well.
The hypodermis in maize comprises many layers of sclerenchymatous cells interspersed with cells of chlorenchyma. It allows the factory with mechanical assistance. Thus, option C is not the correct option.
Parenchyma comprises the leaves' chloroplast-laden mesophyll or the stems as well as roots' cortex and pith; it also constitutes the soft tissues of fruits. In phloem and xylem as shift cells and as the bundle sheaths covering the vascular strands, cells of such a type are also found. Thus, option D is not the correct option.
So, the correct answer is “Option B”.

Note:
Sclerenchyma is the tissue that made it stiff and hard for the plant. The guiding tissue in plants is Sclerenchyma. The main supporting cells in plant tissues which have stopped elongation are Sclerenchyma cells. Fibers of Sclerenchyma are of major economic value because they are the original source for several fabrics.