271545
Read the following statements \(A\) and \(B\). A: Many organs of aquatic plants float in water. B: Large air gaps are present in the collenchymas tissues of lotus leaf. Select the correct answer.
1 Statement A is correct and B is wrong
2 Statement B is correct and A is wrong.
3 Statements A and B both are correct.
4 Statements A and B both are wrong.
Explanation:
Exp:A Many organs of aquatic plant float in water because of consists of network of parenchyma cell which enclose very large air cavities. These air cavities store gases and make the aquatic plant light and buoyant. - As air gap are present in the collenchyma tissue of lotus leaf because collenchyma is a simple tissue with pectocellulose thickening in its wall.
Karnataka CET-2011
Anatomy of Flowering Plants
271546
The branched sclereids present in hydrophytes are:
1 Osteosclereids
2 Trichosclereids
3 Macrosclereids
4 Astrosclereids
Explanation:
Exp:D Astrosclerids are star shaped. It has branched i.e arm. Many hydrophytes like nymphaea, astrosclerids are found.
AIIMS-2009
Anatomy of Flowering Plants
271551
Bordered pits are found in
1 sieve cells
2 vessel wall
3 companion cells
4 sieve tube wall
Explanation:
Exp:B Borded pits are found in vessel wall. Pits are the depressions or cavity formed in the cell wall that are found in the thick walled schlerenchyma, parenchyma cells and the tracheary elements, i.e. vessels and tracheids.
AIPMT-1993
Anatomy of Flowering Plants
271552
An organised and differentiated cellular structure having cytoplasm but no nucleus is
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids.
Explanation:
Exp:C An organized and differentiated cellular structure having cytoplasm but no nucleus is sieve tubes. A mature sieve elements possesses a peripheral cytoplasm and large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
271545
Read the following statements \(A\) and \(B\). A: Many organs of aquatic plants float in water. B: Large air gaps are present in the collenchymas tissues of lotus leaf. Select the correct answer.
1 Statement A is correct and B is wrong
2 Statement B is correct and A is wrong.
3 Statements A and B both are correct.
4 Statements A and B both are wrong.
Explanation:
Exp:A Many organs of aquatic plant float in water because of consists of network of parenchyma cell which enclose very large air cavities. These air cavities store gases and make the aquatic plant light and buoyant. - As air gap are present in the collenchyma tissue of lotus leaf because collenchyma is a simple tissue with pectocellulose thickening in its wall.
Karnataka CET-2011
Anatomy of Flowering Plants
271546
The branched sclereids present in hydrophytes are:
1 Osteosclereids
2 Trichosclereids
3 Macrosclereids
4 Astrosclereids
Explanation:
Exp:D Astrosclerids are star shaped. It has branched i.e arm. Many hydrophytes like nymphaea, astrosclerids are found.
AIIMS-2009
Anatomy of Flowering Plants
271551
Bordered pits are found in
1 sieve cells
2 vessel wall
3 companion cells
4 sieve tube wall
Explanation:
Exp:B Borded pits are found in vessel wall. Pits are the depressions or cavity formed in the cell wall that are found in the thick walled schlerenchyma, parenchyma cells and the tracheary elements, i.e. vessels and tracheids.
AIPMT-1993
Anatomy of Flowering Plants
271552
An organised and differentiated cellular structure having cytoplasm but no nucleus is
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids.
Explanation:
Exp:C An organized and differentiated cellular structure having cytoplasm but no nucleus is sieve tubes. A mature sieve elements possesses a peripheral cytoplasm and large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
271545
Read the following statements \(A\) and \(B\). A: Many organs of aquatic plants float in water. B: Large air gaps are present in the collenchymas tissues of lotus leaf. Select the correct answer.
1 Statement A is correct and B is wrong
2 Statement B is correct and A is wrong.
3 Statements A and B both are correct.
4 Statements A and B both are wrong.
Explanation:
Exp:A Many organs of aquatic plant float in water because of consists of network of parenchyma cell which enclose very large air cavities. These air cavities store gases and make the aquatic plant light and buoyant. - As air gap are present in the collenchyma tissue of lotus leaf because collenchyma is a simple tissue with pectocellulose thickening in its wall.
Karnataka CET-2011
Anatomy of Flowering Plants
271546
The branched sclereids present in hydrophytes are:
1 Osteosclereids
2 Trichosclereids
3 Macrosclereids
4 Astrosclereids
Explanation:
Exp:D Astrosclerids are star shaped. It has branched i.e arm. Many hydrophytes like nymphaea, astrosclerids are found.
AIIMS-2009
Anatomy of Flowering Plants
271551
Bordered pits are found in
1 sieve cells
2 vessel wall
3 companion cells
4 sieve tube wall
Explanation:
Exp:B Borded pits are found in vessel wall. Pits are the depressions or cavity formed in the cell wall that are found in the thick walled schlerenchyma, parenchyma cells and the tracheary elements, i.e. vessels and tracheids.
AIPMT-1993
Anatomy of Flowering Plants
271552
An organised and differentiated cellular structure having cytoplasm but no nucleus is
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids.
Explanation:
Exp:C An organized and differentiated cellular structure having cytoplasm but no nucleus is sieve tubes. A mature sieve elements possesses a peripheral cytoplasm and large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
271545
Read the following statements \(A\) and \(B\). A: Many organs of aquatic plants float in water. B: Large air gaps are present in the collenchymas tissues of lotus leaf. Select the correct answer.
1 Statement A is correct and B is wrong
2 Statement B is correct and A is wrong.
3 Statements A and B both are correct.
4 Statements A and B both are wrong.
Explanation:
Exp:A Many organs of aquatic plant float in water because of consists of network of parenchyma cell which enclose very large air cavities. These air cavities store gases and make the aquatic plant light and buoyant. - As air gap are present in the collenchyma tissue of lotus leaf because collenchyma is a simple tissue with pectocellulose thickening in its wall.
Karnataka CET-2011
Anatomy of Flowering Plants
271546
The branched sclereids present in hydrophytes are:
1 Osteosclereids
2 Trichosclereids
3 Macrosclereids
4 Astrosclereids
Explanation:
Exp:D Astrosclerids are star shaped. It has branched i.e arm. Many hydrophytes like nymphaea, astrosclerids are found.
AIIMS-2009
Anatomy of Flowering Plants
271551
Bordered pits are found in
1 sieve cells
2 vessel wall
3 companion cells
4 sieve tube wall
Explanation:
Exp:B Borded pits are found in vessel wall. Pits are the depressions or cavity formed in the cell wall that are found in the thick walled schlerenchyma, parenchyma cells and the tracheary elements, i.e. vessels and tracheids.
AIPMT-1993
Anatomy of Flowering Plants
271552
An organised and differentiated cellular structure having cytoplasm but no nucleus is
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids.
Explanation:
Exp:C An organized and differentiated cellular structure having cytoplasm but no nucleus is sieve tubes. A mature sieve elements possesses a peripheral cytoplasm and large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
