Exp:A The jute fibres anatomically are 'Bast fibres', It is a ligno-cellulosic fibre that is partially a textile fiber and partially wood. It falls in to the bast fibre category. This fibre is collected from bats or skin of the plant. It is also known as golden fibre mainly because of its colour.
BHU PMT (Screening)-2007
Anatomy of Flowering Plants
271587
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 Autolyric enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D In the sieve elements, sealing off mechanism on wounding is the most likely function of P-proteins. P-protein is also called phloem protein. This protein can be traced to the phloem. The most important function of P-protein is the sealing mechanism on wounding Pproteins are usually found in phloem of dicot plants.
Rajasthan PMT-2010
Anatomy of Flowering Plants
271588
Wilting of plant is due to
1 blockage of phloem
2 blockage of xylem
3 when some roots and phloem are removed
4 tracheid is blocked
Explanation:
Exp:B Wilting of plant is due to the 'blockage of xylem'. The collapse of leaves due to loss of water is called 'wilting'. It may be caused due to excessive transpiration, blocking of xylem elements or some diseases, when roots are unable to supply sufficient moisture to the stems and leaves plants to wilt.
BCECE-2010
Anatomy of Flowering Plants
271589
When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through
1 spongy parenchyma
2 lower epidermis
3 vascular bundles
4 palisade parenchyma
Explanation:
Exp:D When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through palisade parenchyma. In a dicot leaf-symmetry is dorsiventral, stomata are more on lower surface, bundle sheath is made up of parenchyma, they have the palisade parenchyma on adaxial side and spongy parenchyma on abaxial side, sunflower is a dicot.
Exp:A The jute fibres anatomically are 'Bast fibres', It is a ligno-cellulosic fibre that is partially a textile fiber and partially wood. It falls in to the bast fibre category. This fibre is collected from bats or skin of the plant. It is also known as golden fibre mainly because of its colour.
BHU PMT (Screening)-2007
Anatomy of Flowering Plants
271587
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 Autolyric enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D In the sieve elements, sealing off mechanism on wounding is the most likely function of P-proteins. P-protein is also called phloem protein. This protein can be traced to the phloem. The most important function of P-protein is the sealing mechanism on wounding Pproteins are usually found in phloem of dicot plants.
Rajasthan PMT-2010
Anatomy of Flowering Plants
271588
Wilting of plant is due to
1 blockage of phloem
2 blockage of xylem
3 when some roots and phloem are removed
4 tracheid is blocked
Explanation:
Exp:B Wilting of plant is due to the 'blockage of xylem'. The collapse of leaves due to loss of water is called 'wilting'. It may be caused due to excessive transpiration, blocking of xylem elements or some diseases, when roots are unable to supply sufficient moisture to the stems and leaves plants to wilt.
BCECE-2010
Anatomy of Flowering Plants
271589
When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through
1 spongy parenchyma
2 lower epidermis
3 vascular bundles
4 palisade parenchyma
Explanation:
Exp:D When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through palisade parenchyma. In a dicot leaf-symmetry is dorsiventral, stomata are more on lower surface, bundle sheath is made up of parenchyma, they have the palisade parenchyma on adaxial side and spongy parenchyma on abaxial side, sunflower is a dicot.
Exp:A The jute fibres anatomically are 'Bast fibres', It is a ligno-cellulosic fibre that is partially a textile fiber and partially wood. It falls in to the bast fibre category. This fibre is collected from bats or skin of the plant. It is also known as golden fibre mainly because of its colour.
BHU PMT (Screening)-2007
Anatomy of Flowering Plants
271587
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 Autolyric enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D In the sieve elements, sealing off mechanism on wounding is the most likely function of P-proteins. P-protein is also called phloem protein. This protein can be traced to the phloem. The most important function of P-protein is the sealing mechanism on wounding Pproteins are usually found in phloem of dicot plants.
Rajasthan PMT-2010
Anatomy of Flowering Plants
271588
Wilting of plant is due to
1 blockage of phloem
2 blockage of xylem
3 when some roots and phloem are removed
4 tracheid is blocked
Explanation:
Exp:B Wilting of plant is due to the 'blockage of xylem'. The collapse of leaves due to loss of water is called 'wilting'. It may be caused due to excessive transpiration, blocking of xylem elements or some diseases, when roots are unable to supply sufficient moisture to the stems and leaves plants to wilt.
BCECE-2010
Anatomy of Flowering Plants
271589
When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through
1 spongy parenchyma
2 lower epidermis
3 vascular bundles
4 palisade parenchyma
Explanation:
Exp:D When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through palisade parenchyma. In a dicot leaf-symmetry is dorsiventral, stomata are more on lower surface, bundle sheath is made up of parenchyma, they have the palisade parenchyma on adaxial side and spongy parenchyma on abaxial side, sunflower is a dicot.
Exp:A The jute fibres anatomically are 'Bast fibres', It is a ligno-cellulosic fibre that is partially a textile fiber and partially wood. It falls in to the bast fibre category. This fibre is collected from bats or skin of the plant. It is also known as golden fibre mainly because of its colour.
BHU PMT (Screening)-2007
Anatomy of Flowering Plants
271587
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 Autolyric enzymes
4 Sealing off mechanism on wounding
Explanation:
Exp:D In the sieve elements, sealing off mechanism on wounding is the most likely function of P-proteins. P-protein is also called phloem protein. This protein can be traced to the phloem. The most important function of P-protein is the sealing mechanism on wounding Pproteins are usually found in phloem of dicot plants.
Rajasthan PMT-2010
Anatomy of Flowering Plants
271588
Wilting of plant is due to
1 blockage of phloem
2 blockage of xylem
3 when some roots and phloem are removed
4 tracheid is blocked
Explanation:
Exp:B Wilting of plant is due to the 'blockage of xylem'. The collapse of leaves due to loss of water is called 'wilting'. It may be caused due to excessive transpiration, blocking of xylem elements or some diseases, when roots are unable to supply sufficient moisture to the stems and leaves plants to wilt.
BCECE-2010
Anatomy of Flowering Plants
271589
When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through
1 spongy parenchyma
2 lower epidermis
3 vascular bundles
4 palisade parenchyma
Explanation:
Exp:D When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through palisade parenchyma. In a dicot leaf-symmetry is dorsiventral, stomata are more on lower surface, bundle sheath is made up of parenchyma, they have the palisade parenchyma on adaxial side and spongy parenchyma on abaxial side, sunflower is a dicot.
