Exp:A Lignification is associated with 'xylem' it is a cell wall fortifying process which occurs in xylem tissue in a scheduled manner during tissue differentiation. It is a complex process. It's main function is to strength in the plant vascular body.
Punjab MET-2006
Anatomy of Flowering Plants
271572
Which of the following cell is enucleate at maturity?
1 Sieve tube
2 Xylem
3 Tracheids
4 Fibre
Explanation:
Exp:A 'Sieve tube' cell is enucleate at maturity. A matured sieve cell or sieve tube element lack of nucleus Thus, these are enucleated living cells.
BHU PMT-2002
Anatomy of Flowering Plants
271573
Porous wood contains
1 vessels
2 tracheids
3 fibres
4 parenchyma
Explanation:
Exp:A Porous wood contains the 'vessels'. The wood produced by angiosperms is called hard wood. It is composed mainly of vessels and is also called 'porous wood.
BVP-2010
Anatomy of Flowering Plants
271574
Which of the following statements is correct?
1 Xylem is made of all living cells
2 Xylem is made of living and non-living cells
3 Xylem is made of non-living cells
4 Xylem does not contain cells
Explanation:
Exp:B Xylem is made of living and nonliving cells. It is a plant tissue that is complex and it is responsible for water transport and nutrients to the plant Xylemtype vessel cells can be either alive or dead. According to botanists, the elements of xylem tissue are dead except for the living parenchyma.
BVP-2010
Anatomy of Flowering Plants
271575
Vessels and companion cells are absent in :
1 gymnosperm and pteridophyta
2 pteridophyta and monocot
3 dicot and angiosperms
4 none of the above
Explanation:
Exp:A Vessels and companion cells are absent in 'gymnosperm and pteridophyta'. Gymnosperms do not have vessels and companion cells. Xylem in gymnosperms consists of tracheids instead of vessels. Gymnosperms and lower plants such as Pteridophytes, mosses and ferns lack sieve tubes and companion cells. Pteridophytes are vascular plants but they differ from angiosperms in that they lack Xylem vessels and phloem companion cells. Gymnosperms cells for food conduction.
Exp:A Lignification is associated with 'xylem' it is a cell wall fortifying process which occurs in xylem tissue in a scheduled manner during tissue differentiation. It is a complex process. It's main function is to strength in the plant vascular body.
Punjab MET-2006
Anatomy of Flowering Plants
271572
Which of the following cell is enucleate at maturity?
1 Sieve tube
2 Xylem
3 Tracheids
4 Fibre
Explanation:
Exp:A 'Sieve tube' cell is enucleate at maturity. A matured sieve cell or sieve tube element lack of nucleus Thus, these are enucleated living cells.
BHU PMT-2002
Anatomy of Flowering Plants
271573
Porous wood contains
1 vessels
2 tracheids
3 fibres
4 parenchyma
Explanation:
Exp:A Porous wood contains the 'vessels'. The wood produced by angiosperms is called hard wood. It is composed mainly of vessels and is also called 'porous wood.
BVP-2010
Anatomy of Flowering Plants
271574
Which of the following statements is correct?
1 Xylem is made of all living cells
2 Xylem is made of living and non-living cells
3 Xylem is made of non-living cells
4 Xylem does not contain cells
Explanation:
Exp:B Xylem is made of living and nonliving cells. It is a plant tissue that is complex and it is responsible for water transport and nutrients to the plant Xylemtype vessel cells can be either alive or dead. According to botanists, the elements of xylem tissue are dead except for the living parenchyma.
BVP-2010
Anatomy of Flowering Plants
271575
Vessels and companion cells are absent in :
1 gymnosperm and pteridophyta
2 pteridophyta and monocot
3 dicot and angiosperms
4 none of the above
Explanation:
Exp:A Vessels and companion cells are absent in 'gymnosperm and pteridophyta'. Gymnosperms do not have vessels and companion cells. Xylem in gymnosperms consists of tracheids instead of vessels. Gymnosperms and lower plants such as Pteridophytes, mosses and ferns lack sieve tubes and companion cells. Pteridophytes are vascular plants but they differ from angiosperms in that they lack Xylem vessels and phloem companion cells. Gymnosperms cells for food conduction.
Exp:A Lignification is associated with 'xylem' it is a cell wall fortifying process which occurs in xylem tissue in a scheduled manner during tissue differentiation. It is a complex process. It's main function is to strength in the plant vascular body.
Punjab MET-2006
Anatomy of Flowering Plants
271572
Which of the following cell is enucleate at maturity?
1 Sieve tube
2 Xylem
3 Tracheids
4 Fibre
Explanation:
Exp:A 'Sieve tube' cell is enucleate at maturity. A matured sieve cell or sieve tube element lack of nucleus Thus, these are enucleated living cells.
BHU PMT-2002
Anatomy of Flowering Plants
271573
Porous wood contains
1 vessels
2 tracheids
3 fibres
4 parenchyma
Explanation:
Exp:A Porous wood contains the 'vessels'. The wood produced by angiosperms is called hard wood. It is composed mainly of vessels and is also called 'porous wood.
BVP-2010
Anatomy of Flowering Plants
271574
Which of the following statements is correct?
1 Xylem is made of all living cells
2 Xylem is made of living and non-living cells
3 Xylem is made of non-living cells
4 Xylem does not contain cells
Explanation:
Exp:B Xylem is made of living and nonliving cells. It is a plant tissue that is complex and it is responsible for water transport and nutrients to the plant Xylemtype vessel cells can be either alive or dead. According to botanists, the elements of xylem tissue are dead except for the living parenchyma.
BVP-2010
Anatomy of Flowering Plants
271575
Vessels and companion cells are absent in :
1 gymnosperm and pteridophyta
2 pteridophyta and monocot
3 dicot and angiosperms
4 none of the above
Explanation:
Exp:A Vessels and companion cells are absent in 'gymnosperm and pteridophyta'. Gymnosperms do not have vessels and companion cells. Xylem in gymnosperms consists of tracheids instead of vessels. Gymnosperms and lower plants such as Pteridophytes, mosses and ferns lack sieve tubes and companion cells. Pteridophytes are vascular plants but they differ from angiosperms in that they lack Xylem vessels and phloem companion cells. Gymnosperms cells for food conduction.
Exp:A Lignification is associated with 'xylem' it is a cell wall fortifying process which occurs in xylem tissue in a scheduled manner during tissue differentiation. It is a complex process. It's main function is to strength in the plant vascular body.
Punjab MET-2006
Anatomy of Flowering Plants
271572
Which of the following cell is enucleate at maturity?
1 Sieve tube
2 Xylem
3 Tracheids
4 Fibre
Explanation:
Exp:A 'Sieve tube' cell is enucleate at maturity. A matured sieve cell or sieve tube element lack of nucleus Thus, these are enucleated living cells.
BHU PMT-2002
Anatomy of Flowering Plants
271573
Porous wood contains
1 vessels
2 tracheids
3 fibres
4 parenchyma
Explanation:
Exp:A Porous wood contains the 'vessels'. The wood produced by angiosperms is called hard wood. It is composed mainly of vessels and is also called 'porous wood.
BVP-2010
Anatomy of Flowering Plants
271574
Which of the following statements is correct?
1 Xylem is made of all living cells
2 Xylem is made of living and non-living cells
3 Xylem is made of non-living cells
4 Xylem does not contain cells
Explanation:
Exp:B Xylem is made of living and nonliving cells. It is a plant tissue that is complex and it is responsible for water transport and nutrients to the plant Xylemtype vessel cells can be either alive or dead. According to botanists, the elements of xylem tissue are dead except for the living parenchyma.
BVP-2010
Anatomy of Flowering Plants
271575
Vessels and companion cells are absent in :
1 gymnosperm and pteridophyta
2 pteridophyta and monocot
3 dicot and angiosperms
4 none of the above
Explanation:
Exp:A Vessels and companion cells are absent in 'gymnosperm and pteridophyta'. Gymnosperms do not have vessels and companion cells. Xylem in gymnosperms consists of tracheids instead of vessels. Gymnosperms and lower plants such as Pteridophytes, mosses and ferns lack sieve tubes and companion cells. Pteridophytes are vascular plants but they differ from angiosperms in that they lack Xylem vessels and phloem companion cells. Gymnosperms cells for food conduction.
Exp:A Lignification is associated with 'xylem' it is a cell wall fortifying process which occurs in xylem tissue in a scheduled manner during tissue differentiation. It is a complex process. It's main function is to strength in the plant vascular body.
Punjab MET-2006
Anatomy of Flowering Plants
271572
Which of the following cell is enucleate at maturity?
1 Sieve tube
2 Xylem
3 Tracheids
4 Fibre
Explanation:
Exp:A 'Sieve tube' cell is enucleate at maturity. A matured sieve cell or sieve tube element lack of nucleus Thus, these are enucleated living cells.
BHU PMT-2002
Anatomy of Flowering Plants
271573
Porous wood contains
1 vessels
2 tracheids
3 fibres
4 parenchyma
Explanation:
Exp:A Porous wood contains the 'vessels'. The wood produced by angiosperms is called hard wood. It is composed mainly of vessels and is also called 'porous wood.
BVP-2010
Anatomy of Flowering Plants
271574
Which of the following statements is correct?
1 Xylem is made of all living cells
2 Xylem is made of living and non-living cells
3 Xylem is made of non-living cells
4 Xylem does not contain cells
Explanation:
Exp:B Xylem is made of living and nonliving cells. It is a plant tissue that is complex and it is responsible for water transport and nutrients to the plant Xylemtype vessel cells can be either alive or dead. According to botanists, the elements of xylem tissue are dead except for the living parenchyma.
BVP-2010
Anatomy of Flowering Plants
271575
Vessels and companion cells are absent in :
1 gymnosperm and pteridophyta
2 pteridophyta and monocot
3 dicot and angiosperms
4 none of the above
Explanation:
Exp:A Vessels and companion cells are absent in 'gymnosperm and pteridophyta'. Gymnosperms do not have vessels and companion cells. Xylem in gymnosperms consists of tracheids instead of vessels. Gymnosperms and lower plants such as Pteridophytes, mosses and ferns lack sieve tubes and companion cells. Pteridophytes are vascular plants but they differ from angiosperms in that they lack Xylem vessels and phloem companion cells. Gymnosperms cells for food conduction.
