EVERYDAY SCIENCE

Detailed explanation-1: -The vascular cambium arises between the primary xylem and phloem of a young stem or root. Parenchymatous cells become meristematic and begin to produce secondary xylem or wood toward the inside of the cambium and secondary phloem toward the outside of the cambium.

Detailed explanation-2: -In woody roots the vascular cambium (the lateral meristem that gives rise to secondary phloem and secondary xylem) originates in the pericycle as well as in the procambium; the procambium is the primary meristematic tissue between the primary phloem and xylem.

Detailed explanation-3: -Cambium (lateral meristem) is situated below the bark and is responsible for the increase in the girth of the stem or root.

Detailed explanation-4: -Lateral meristems help in the growth of the girth or diameter of the stem as well as roots. It thus helps in the process of secondary growth. The cork cambia and the vascular cambia collectively are responsible for the secondary growth of plants. They are parts of the lateral meristem.

Detailed explanation-5: -There are three types of meristematic tissues: apical (at the tips), intercalary or basal (in the middle), and lateral (at the sides).