Prepare for NEET Biology Anatomy of Flowering Plants with MCQs & PYQs on NEET.GUIDE. Enjoy free practice, previous year questions, and expert insights on plant tissues and structures.
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
Which statement BEST describes the relationship between collenchyma and sclerenchyma?
Both are composed of living cells at maturity.
Both have evenly thickened cell walls.
Both contain lignin in their cell walls.
Both provide structural support, but collenchyma provides flexible support in growing regions while sclerenchyma provides rigid support in mature regions.
Which component is primarily responsible for the thickening of collenchyma cell walls?
Pectin
Lignin
Suberin
Cutin
Parenchyma is living tissue. Select the incorrect one about it
Cells are generally isodiametric
Walls are thin and cellulosic
May have small intercellular spaces
Provides mechanical support to young stem as has lignin deposition
At maturity, the sieve plates become impregnated with
Cellulose
Pectin
Suberin
Callose
Cells of collenchyma have thickened corners due to the deposition of
Cellulose
Hemicellulose
Pectin
All of these
The cork is impervious to water due to
Lignin deposition in the cell wall
Compactness of cell
Suberin deposition in the cell wall
All of the above
Identify from the following, a plant tissue in which lignin does not occur in the cell walls?
Collenchyma
Sclerenchyma fibres
Sclereids
Xylem tracheae
