A scientist is studying a newly discovered plant species. Microscopic analysis of the stem reveals living cells with unevenly thickened cell walls, primarily composed of pectin and hemicellulose, providing flexible support. These cells lack lignin and are found in patches beneath the epidermis. Which tissue type is being observed?
Collenchyma
Sclerenchyma
Parenchyma
Xylem
Related Questions
What type of thickening is characteristic of collenchyma cell walls?
Uneven thickening, especially at the corners
Uniform thickening all around the cell
Thickening with lignin deposits
No thickening at all
Collenchyma is
Living and contains protoplasm
Dead and hollow
Dead and filled with reserve food
Living and contains no reserve food
Where is collenchyma tissue typically found in plants?
Beneath the epidermis in young stems and petioles
In the center of the root
In the vascular bundles of leaves
Surrounding the xylem and phloem
Cell wall of collenchyma composed of?
Cellulose
Hemi cellulose
Pectin
All of these
The flexibility of collenchyma tissue is primarily attributed to:
The presence of lignin in the cell wall
The thin cell walls
The combination of pectin and hemicellulose in the cell wall
The intercellular spaces present between the cells
In which specific plant structures would you LEAST expect to find collenchyma tissue?
Beneath the epidermis of young stems
In the petioles of leaves
Supporting the veins of leaves
Mature vascular bundles of woody stems
Which of the following characteristics is NOT typical of collenchyma cells?
Uniformly thickened cell walls
Presence of pectin in the cell wall
Living at maturity
Provide flexible support
Collenchyma is
Living and contains protoplasm
Dead and hollow
Dead and filled with reserve food
Living and contains no reserve food
A scientist is studying a newly discovered plant species. Microscopic analysis of the stem reveals living cells with unevenly thickened cell walls, primarily composed of pectin and hemicellulose, providing flexible support. These cells lack lignin and are found in patches beneath the epidermis. Which tissue type is being observed?
Collenchyma
Sclerenchyma
Parenchyma
Xylem
Which of the following is NOT a characteristic feature of collenchyma cells?
Presence of lignin in cell walls
Unevenly thickened cell walls
Living cells at maturity
Provides flexible support to the plant
