Govt Exams
The pericycle, a layer of parenchyma cells inside the endodermis, initiates the formation of lateral roots.
The epidermis is primarily protective and regulatory; photosynthesis is the function of mesophyll cells in the leaf.
Casparian strips are bands of suberin deposited on the radial and transverse walls of endodermal cells, preventing lateral water movement.
Dicot roots show radial arrangement of vascular bundles with xylem rays alternating with phloem strands.
Mesophyll tissue consists of palisade and spongy parenchyma and is located between the two epidermal layers.
Guard cells are specialized epidermal cells that change shape to open or close the stomatal pore.
Stomata are pores in the leaf epidermis that regulate gas exchange (CO2 intake, O2 release) and transpiration.
Monocot stems have scattered vascular bundles throughout the ground tissue, unlike dicots which have ring-arranged bundles.
Cork tissue (phellem) is produced outward by the cork cambium (phellogen), which is a lateral meristem.
Xylem is a vascular tissue that transports water and mineral nutrients from roots to aerial parts of the plant.