Question

When are ground, vascular and dermal tissues formed?

Answer 1

Meristems:

1. Meristems give rise to cells that differentiate or specialize at a faster rate & turn into various permanent tissues.
2. Such cells are deployed in the dedicated functions, thus losing their capability to further even divide.

It differentiates into 3 main types of tissues:

1. Dermal,
2. Vascular, and
3. Ground tissue.

Dermal Tissue:

1. It comprises the epidermis primarily, a single tissue forming an outer protective covering of the plant body.
2. They also protect and cover the plant, regulating the exchange of gases & absorption of water.
3. The epidermis generally comprises special, flattened cells which are polygonal in shape.
4. Specialized epidermal type of the cells occurring in all leaves are called guard cells.

Vascular Tissue:

1. It is involved in the transportation of minerals, water & sugars to various plant parts.
2. Tissue comprises of 2 special conducting tissues – phloem and xylem.
3. While the xylem transports nutrients and water from roots to various parts of the plant apart from rendering various structural support to the stem, the phloem is involved in the transportation of organic compounds from the region of photosynthesis to various other plant parts.

Ground Tissue:

1. They generally constitute most of the interior parts of the plant.
2. Perform various kinds of roles depending on the type of cells, and plant location, including parenchyma, collenchyma, and sclerenchyma.
3. Render supporting the matrix for vascular tissues, alongside providing structural assistance to stem and assisting in storing water and sugars.