Question

Vascular tissues of flowering plant develop from
A) Dermatogen
B) Periblem
C) Plerome
D) Phellogen

Answer 1

Hint: Vascular tissue is a complex conductive tissue, formed by more than one cell type, found in vascular plants. The primary components of vascular tissue are xylem and phloem. These two tissues transport fluids and nutrients internally.

Complete answer:
There are also two meristems related to the vascular tissue: the vascular cambium and the cork cambium. All the vascular tissues in a particular plant together make up the vascular tissue system of that plant.

The cells in the vascular tissue are usually long and slender. Because xylene and phloem function in the conduction of water, minerals and nutrients throughout the plant, it is not surprising that their form should be similar to pipes.

Now let us analyze the given options:
Option A: Dermatogen : Dermatogen is the primary meristem present at the stem and root tips of the plants.They are formed by apical meristematic tissues.They form the outermost layer of a plant or part of a plant according to histogen theory.

Option B: Periblem: Periblem is a primary meristem that is located between the plerome and the dermatogen and forms a cortex.

Option C: Plerome: Plerome is the number one meristem that paperwork the important center of a plant or plant element which offers upward push to the stele (consists of the vascular tissue, pith and pericycle). The part of the plerome from which vascular tissues are fashioned is known as procambium.

Option D: Phellogen: Phellogen is also known as cork cambium, which forms a layer of cells that produces a secondary protective layer of the stem called periderm.

Thus, the answer is option ‘C’ i.e, ‘Plerome’

Note: The vascular bundles are located in the leaves between the spongy mesophyll. The xylem is oriented towards the adaxial surface of the leaf (usually the upper side) and the phloem is oriented towards the abaxial surface of the leaf. This is why aphids are typically found on the undersides of the leaves rather than on the top, as the phloem carries sugars produced by the plant and is closer to the lower surface.