Askiitians Tutor Team
Last Activity: 4 Months ago
The correct answer is A) Plate meristem.
Meristems are regions in plants where cells continuously divide and contribute to growth. There are different types of meristems, and each has a specific pattern of cell division and function in plant growth.
Plate Meristem:
• Plate meristem is a type of meristematic tissue where the cells divide in several planes, typically in two or more directions. This type of division results in a flat or plate-like growth pattern, contributing to the growth in two dimensions.
• It is commonly found in leaf primordia during the early stages of leaf development, where cells divide to form the flat structure of the leaf.
Analysis of Other Options:
• B) Rib meristem: The rib meristem is responsible for the growth of plant stems. In this type of meristem, the cells divide mostly in one plane, leading to lengthening growth. It is more associated with the elongation of shoots and is found in the shoot apical meristem.
• C) Mass meristem: The mass meristem involves cells that divide in multiple planes but typically contribute to 3-dimensional growth, especially in structures like the root cap and embryos during development. However, it does not typically exhibit the specific plate-like division seen in plate meristems.
• D) Lateral meristem: The lateral meristem (including vascular cambium and cork cambium) is responsible for secondary growth, such as the increase in girth or thickness of stems and roots. It typically divides in a radial plane to produce secondary tissues like secondary xylem and phloem.
The meristem where cells divide in several planes, contributing to the flat, plate-like growth pattern, is called the plate meristem, making A) Plate meristem the correct answer.