Practice MCQ Questions and answers on Biology-GK

Tracheids (top) and vessel elements (bottom) are the water conducting cells of xylem tissue.

The inner bark is composed of living tissues, which help translocate the sugars created in the leaves to other parts of the plant. This happens in the secondary phloem.

Cork cambium and vascular cambium are responsible for the increase in diameter of the stem and root of a plant. These are present in dicot plants. These are the lateral meristem and are responsible for the secondary growth of the plant.

Xylem transports water from the roots of the plant to its leaves.

Xylem transports water and mineral salts from the roots up to other parts of the plant, while phloem transports sucrose and amino acids between the leaves and other parts of the plant.

The food which is prepared by the process of photosynthesis in the leaves of a plant has to be transported to other parts like stem, roots, branches etc. Phloem transports this food material.

A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function.
Hence, Cells with similar markers stick together and function as tissues.

The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.

Unlike the other tissue types (epithelium, muscle, and nerve), which consist mainly of cells, the major constituent of connective tissue is the extracellular matrix (ECM). Extracellular matrices consist of different combinations of protein fibers (collagen and elastic fibers) and ground substance.

A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball.