Question

In barley stem vascular bundles are
(A) Closed and radial
(B) Open and scattered
(C) Closed and scattered
(D) Open and in a ring

Answer 1

Hint: Barley is the monocotyledonous plant and is the member of the grass family. This belongs to the cereal and mainly grows in the regions of the temperate climate. It has many vitamins and the fiber in it and hence they are used for making bread, beverages, stews and the other food products.

Complete answer:
In the barley stem region, the vascular bundles are conjoint, collateral and closed. They also have the closed vascular bundles since they lack cambium in the stem. Cambium is the structure of cells that grow between the tissues of the xylem and the phloem. This cambium is used to form the secondary connective tissue between them in both the stem and the leaves.

In the conjoint vascular bundle, the both phloem and the xylem occur in the same radius and are arranged together. This type of vascular bundle is mainly seen in the stem and the leaves. Barley also shows the collateral type of vascular bundle in which the xylem occurs at the center of the stem and the phloem occurs at the periphery of the stem. And these vascular bundles are scattered throughout the ground tissue. Hence the vascular bundles are closed and scattered in barley.

Hence, the correct answer is option (C)

Note: Xylem are the tissues that are used to transmit the water from the root to the point of photosynthesis, leaves. The phloem is used to transfer the food from the leaves to the other parts of the plants. The cambium that grows in between these two, which are made of parenchyma cells.