271563
In the sieve elements, which one of the following is the most likely function of \(P\) proteins?
1 Deposition of callose on sieve plates
2 Providing energy for active translocation
3 Autolytic enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D The balloon shaped intrusions appear in the xylem vessels of heart wood or duramen are called Tyloses. These are formed by the intrusions of ray parenchyma through pits present in the cell wall of vessels. In this cell walls are lignified. They block the xylem vessels. Due to the presence of tyloses, Pathogenic organisms cannot infect the heart wood due to the presence of tyloses. The main function of PProtein is sealing mechanism on wounding.
JIPMER-2011
Anatomy of Flowering Plants
271579
The nature of cell occurring in medulla is
1 Suberised
2 Liquefied
3 Collenchymatous
4 Parenchymatous
Explanation:
Exp:D The nature of cell occurring in medulla is 'parenchymatous', It is made up of parenchymatous cells, medulla is a ground tissue present at the central region of stele. It consist of parenchymatous cells, medulla is also called Pith. Pith stores water and food materials.
VMMC-2013
Anatomy of Flowering Plants
271567
The chief function of sieve tube element is:
1 to conduct minerals
2 to help the plant in forming wood
3 to transport water from roots to leaves
4 to translocate the organic material from source to sink
Explanation:
Exp:D The chief function of sieve tube element is to translocate the organic material form source to sink. Material from source to sink sieve tubes are a component of the phloem in plants. They function as the vessel that transport organic food and other material across the plant. It transport of carbohydrates, primarily sucrose, in the plant.
Manipal-2006
Anatomy of Flowering Plants
271568
Tyloses thickenings are seen in
1 ray parenchyma and xylem cells
2 sclerenchyma
3 ray parenchyma only
4 collenchyma
Explanation:
Exp:A Tyloses thickenings are seen in ray parenchyma and xylem cells.' Tyloses are balloon - like swellings or projections that fill the vessels. Tyloses are spheroidal protoplasmic bulges that are generally formed when the adjacent parenchyma cells, axial parenchyma or raycells, protrude into the dead axial conducting cells.
271563
In the sieve elements, which one of the following is the most likely function of \(P\) proteins?
1 Deposition of callose on sieve plates
2 Providing energy for active translocation
3 Autolytic enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D The balloon shaped intrusions appear in the xylem vessels of heart wood or duramen are called Tyloses. These are formed by the intrusions of ray parenchyma through pits present in the cell wall of vessels. In this cell walls are lignified. They block the xylem vessels. Due to the presence of tyloses, Pathogenic organisms cannot infect the heart wood due to the presence of tyloses. The main function of PProtein is sealing mechanism on wounding.
JIPMER-2011
Anatomy of Flowering Plants
271579
The nature of cell occurring in medulla is
1 Suberised
2 Liquefied
3 Collenchymatous
4 Parenchymatous
Explanation:
Exp:D The nature of cell occurring in medulla is 'parenchymatous', It is made up of parenchymatous cells, medulla is a ground tissue present at the central region of stele. It consist of parenchymatous cells, medulla is also called Pith. Pith stores water and food materials.
VMMC-2013
Anatomy of Flowering Plants
271567
The chief function of sieve tube element is:
1 to conduct minerals
2 to help the plant in forming wood
3 to transport water from roots to leaves
4 to translocate the organic material from source to sink
Explanation:
Exp:D The chief function of sieve tube element is to translocate the organic material form source to sink. Material from source to sink sieve tubes are a component of the phloem in plants. They function as the vessel that transport organic food and other material across the plant. It transport of carbohydrates, primarily sucrose, in the plant.
Manipal-2006
Anatomy of Flowering Plants
271568
Tyloses thickenings are seen in
1 ray parenchyma and xylem cells
2 sclerenchyma
3 ray parenchyma only
4 collenchyma
Explanation:
Exp:A Tyloses thickenings are seen in ray parenchyma and xylem cells.' Tyloses are balloon - like swellings or projections that fill the vessels. Tyloses are spheroidal protoplasmic bulges that are generally formed when the adjacent parenchyma cells, axial parenchyma or raycells, protrude into the dead axial conducting cells.
271563
In the sieve elements, which one of the following is the most likely function of \(P\) proteins?
1 Deposition of callose on sieve plates
2 Providing energy for active translocation
3 Autolytic enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D The balloon shaped intrusions appear in the xylem vessels of heart wood or duramen are called Tyloses. These are formed by the intrusions of ray parenchyma through pits present in the cell wall of vessels. In this cell walls are lignified. They block the xylem vessels. Due to the presence of tyloses, Pathogenic organisms cannot infect the heart wood due to the presence of tyloses. The main function of PProtein is sealing mechanism on wounding.
JIPMER-2011
Anatomy of Flowering Plants
271579
The nature of cell occurring in medulla is
1 Suberised
2 Liquefied
3 Collenchymatous
4 Parenchymatous
Explanation:
Exp:D The nature of cell occurring in medulla is 'parenchymatous', It is made up of parenchymatous cells, medulla is a ground tissue present at the central region of stele. It consist of parenchymatous cells, medulla is also called Pith. Pith stores water and food materials.
VMMC-2013
Anatomy of Flowering Plants
271567
The chief function of sieve tube element is:
1 to conduct minerals
2 to help the plant in forming wood
3 to transport water from roots to leaves
4 to translocate the organic material from source to sink
Explanation:
Exp:D The chief function of sieve tube element is to translocate the organic material form source to sink. Material from source to sink sieve tubes are a component of the phloem in plants. They function as the vessel that transport organic food and other material across the plant. It transport of carbohydrates, primarily sucrose, in the plant.
Manipal-2006
Anatomy of Flowering Plants
271568
Tyloses thickenings are seen in
1 ray parenchyma and xylem cells
2 sclerenchyma
3 ray parenchyma only
4 collenchyma
Explanation:
Exp:A Tyloses thickenings are seen in ray parenchyma and xylem cells.' Tyloses are balloon - like swellings or projections that fill the vessels. Tyloses are spheroidal protoplasmic bulges that are generally formed when the adjacent parenchyma cells, axial parenchyma or raycells, protrude into the dead axial conducting cells.
271563
In the sieve elements, which one of the following is the most likely function of \(P\) proteins?
1 Deposition of callose on sieve plates
2 Providing energy for active translocation
3 Autolytic enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D The balloon shaped intrusions appear in the xylem vessels of heart wood or duramen are called Tyloses. These are formed by the intrusions of ray parenchyma through pits present in the cell wall of vessels. In this cell walls are lignified. They block the xylem vessels. Due to the presence of tyloses, Pathogenic organisms cannot infect the heart wood due to the presence of tyloses. The main function of PProtein is sealing mechanism on wounding.
JIPMER-2011
Anatomy of Flowering Plants
271579
The nature of cell occurring in medulla is
1 Suberised
2 Liquefied
3 Collenchymatous
4 Parenchymatous
Explanation:
Exp:D The nature of cell occurring in medulla is 'parenchymatous', It is made up of parenchymatous cells, medulla is a ground tissue present at the central region of stele. It consist of parenchymatous cells, medulla is also called Pith. Pith stores water and food materials.
VMMC-2013
Anatomy of Flowering Plants
271567
The chief function of sieve tube element is:
1 to conduct minerals
2 to help the plant in forming wood
3 to transport water from roots to leaves
4 to translocate the organic material from source to sink
Explanation:
Exp:D The chief function of sieve tube element is to translocate the organic material form source to sink. Material from source to sink sieve tubes are a component of the phloem in plants. They function as the vessel that transport organic food and other material across the plant. It transport of carbohydrates, primarily sucrose, in the plant.
Manipal-2006
Anatomy of Flowering Plants
271568
Tyloses thickenings are seen in
1 ray parenchyma and xylem cells
2 sclerenchyma
3 ray parenchyma only
4 collenchyma
Explanation:
Exp:A Tyloses thickenings are seen in ray parenchyma and xylem cells.' Tyloses are balloon - like swellings or projections that fill the vessels. Tyloses are spheroidal protoplasmic bulges that are generally formed when the adjacent parenchyma cells, axial parenchyma or raycells, protrude into the dead axial conducting cells.
