Which of the following is NOT a function of the periderm?
Protection against desiccation
Protection against mechanical injury
Protection against pathogens
Conducting water and minerals
Related Questions
In any dicot root having secondary growth, the cork is the
Outermost protective layer.
Innermost vascular layer.
Storage tissue.
Region for gaseous exchange.
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
Which of the following is made up of dead cells?
Phloem
Xylem parenchyma
Collenchyma
Phellem
Which of the following statements about meiosis is INCORRECT?
Chromosome duplication occurs before meiosis I
Homologous chromosomes separate during meiosis I
Sister chromatids separate during meiosis II
Meiosis results in two genetically identical daughter cells
Lenticels, formed during secondary growth in woody stems, primarily facilitate:
Water transport
Nutrient absorption
Gaseous exchange
Phloem loading
Cambium activity is highest in
Autumn
Spring
Winter
Rain
Complementary cells are formed from
Vascular cambium
Phellogen
Apical meristem
Intercalary meristem
Which of the following is characterized by dead cells that provide structural support in plants?
Phloem tissue
Xylem parenchyma
Collenchyma tissue
Sclerenchyma tissue
A mutation in a tree species results in the inability of its vascular cambium to produce fusiform initials. Which of the following consequences would be MOST directly observed?
Cessation of primary growth
Absence of radial vascular bundles
Lack of axial system development in secondary xylem and phloem
Increased production of ray parenchyma
Dendrochronology is
Secondary growth
Apical growth
Seasonal variation
Determination of age of tree
