In a dicot stem undergoing secondary growth, the cells of the vascular cambium divide to produce secondary xylem and phloem. If a tangential section is taken through the secondary xylem, what would be the predominant cell type observed in terms of arrangement?
Radially arranged parenchyma cells
Axially elongated tracheary elements
Isometric sclerenchyma cells
Clustered secretory cells
Related Questions
Pericycle is present in the form of semilunar patch of sclerenchyma in?
Root of sorghum
Root of cicer
Stem of Helianthus
Stem of zea
Damage to the renal cortex would most directly affect which of the following processes?
Reabsorption of water
Secretion of hormones
Filtration of blood
Transport of urine
The region of the kidney found between the renal medulla and the renal capsule is the:
Renal medulla
Renal pelvis
Renal cortex
Ureter
The internal structure of a plant stem is observed. There is a discontinuous ring of angular collenchyma below the epidermis. Type of vascular bundles are of the same type as in the stems of solanaceous plants. Sieve tube elements possess simple sieve plates, identify the plant.
Helianthus
Cucurbita
Zea mays
Hydrilla
Which tissue is responsible for secondary growth in thickness in dicot stems?
Apical meristem
Intercalary meristem
Vascular Cambium
Ground tissue
In stem, the xylem is
Exarch
Mesarch
Endarch
All of these
The internal structure of a plant stem is observed. There is a discontinuous ring of angular collenchyma below the epidermis. Type of vascular bundles are of the same type as in the stems of solanaceous plants. Sieve tube elements possess simple sieve plates, identify the plant.
Helianthus
Cucurbita
Zea mays
Hydrilla
The pith in a dicot stem is primarily composed of:
Collenchyma
Sclerenchyma
Parenchyma
Xylem
In young stem, the vascular cambium is
Single layered
Bilayered
Trilayered
Does not exist
Two cross-sections of stem and root appear simple, when viewed by naked eye. But under microscope, they can be differentiated by
Exarch condition of root and stem
Endarch condition of stem and root
Endarch condition of root and exarch condition of stem
Endarch condition of stem and exarch condition of root