STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
ANATOMY OF FLOWERING PLANTS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Phelloderm comprises Phellem, Phellogen and Periderm
|
|
|
Cork is impervious due to deposits Lignin in the cells
|
|
|
Bark refers to periderm and secondary phloem
|
|
|
Sapwood is involved in conduction of water and minerals from root to leaf
|
Detailed explanation-1: -Bark is a term that refers to the outermost layers of stems and roots of woody plants. This includes the tissues outside the vascular cambium, such as the cork (phellum), cork cambium (phellogen), cortex and secondary phloem.
Detailed explanation-2: -The inner soft bark, or bast, is produced by the vascular cambium; it consists of secondary phloem tissue whose innermost layer conveys food from the leaves to the rest of the plant.
Detailed explanation-3: -The inner bark, which in older stems is living tissue, includes the innermost area of the periderm. Primary xylem is the xylem that is formed during the primary growth from procambium of apical meristems is also present in the bark, So the correct option is ‘primary xylem and periderm’.
Detailed explanation-4: -Answer and Explanation: Bark is composed of secondary phloem and the periderm. Xylem is a component of wood. Bark is the outermost layer in woody plants that is composed of the stems and the roots.