Exp:B Compound sieve plates are found in 'vitis', A compound sieve plate has more than one area. When a sieve plates consist of more than one region of pores it is known as a compound sieve tube like in vitis. In compound sieve plates are pores in the plant cell walls that facilitate transport of material.
AP EAMCET-2003
Anatomy of Flowering Plants
271599
Companion cells in plans are associated with :
1 vessels
2 sperms
3 sieve elements
4 guard cells
Explanation:
Exp:C Companion cells in plants are associated with 'sieve elements'. Each companion cell is usually closely associated with the sieve element. These cells are present in the phloem tissue of the flowering plant. The companion cells are specialized parenchymatous cells, which are closely associated with sieve tube elements.
Haryana PMT-2004
Anatomy of Flowering Plants
271603
The stalk of a plant leaf is derived from which one of the following types of plant tissue?
1 Sclerenchyma
2 Parenchyma
3 Chlorenchyma
4 Collenchyma
Explanation:
Exp:D The stalk of a plant leaf is derived from 'collenchyma', type of plants tissue. The collenchyma occurs in layers below the epidermis in dicotyledonous plants. It consists of cells which are much thickened at the corners due to a deposition of cellulose, hemicelluloses and pectin. These cells assimilate food when they contain chloroplasts.
KVPY SA-2014
Anatomy of Flowering Plants
271605
The nature of sieve elements in the phloem are
1 dead
2 enucleate
3 thick-walled
4 living but non-functional.
Explanation:
Exp:B A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
Exp:B Compound sieve plates are found in 'vitis', A compound sieve plate has more than one area. When a sieve plates consist of more than one region of pores it is known as a compound sieve tube like in vitis. In compound sieve plates are pores in the plant cell walls that facilitate transport of material.
AP EAMCET-2003
Anatomy of Flowering Plants
271599
Companion cells in plans are associated with :
1 vessels
2 sperms
3 sieve elements
4 guard cells
Explanation:
Exp:C Companion cells in plants are associated with 'sieve elements'. Each companion cell is usually closely associated with the sieve element. These cells are present in the phloem tissue of the flowering plant. The companion cells are specialized parenchymatous cells, which are closely associated with sieve tube elements.
Haryana PMT-2004
Anatomy of Flowering Plants
271603
The stalk of a plant leaf is derived from which one of the following types of plant tissue?
1 Sclerenchyma
2 Parenchyma
3 Chlorenchyma
4 Collenchyma
Explanation:
Exp:D The stalk of a plant leaf is derived from 'collenchyma', type of plants tissue. The collenchyma occurs in layers below the epidermis in dicotyledonous plants. It consists of cells which are much thickened at the corners due to a deposition of cellulose, hemicelluloses and pectin. These cells assimilate food when they contain chloroplasts.
KVPY SA-2014
Anatomy of Flowering Plants
271605
The nature of sieve elements in the phloem are
1 dead
2 enucleate
3 thick-walled
4 living but non-functional.
Explanation:
Exp:B A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
Exp:B Compound sieve plates are found in 'vitis', A compound sieve plate has more than one area. When a sieve plates consist of more than one region of pores it is known as a compound sieve tube like in vitis. In compound sieve plates are pores in the plant cell walls that facilitate transport of material.
AP EAMCET-2003
Anatomy of Flowering Plants
271599
Companion cells in plans are associated with :
1 vessels
2 sperms
3 sieve elements
4 guard cells
Explanation:
Exp:C Companion cells in plants are associated with 'sieve elements'. Each companion cell is usually closely associated with the sieve element. These cells are present in the phloem tissue of the flowering plant. The companion cells are specialized parenchymatous cells, which are closely associated with sieve tube elements.
Haryana PMT-2004
Anatomy of Flowering Plants
271603
The stalk of a plant leaf is derived from which one of the following types of plant tissue?
1 Sclerenchyma
2 Parenchyma
3 Chlorenchyma
4 Collenchyma
Explanation:
Exp:D The stalk of a plant leaf is derived from 'collenchyma', type of plants tissue. The collenchyma occurs in layers below the epidermis in dicotyledonous plants. It consists of cells which are much thickened at the corners due to a deposition of cellulose, hemicelluloses and pectin. These cells assimilate food when they contain chloroplasts.
KVPY SA-2014
Anatomy of Flowering Plants
271605
The nature of sieve elements in the phloem are
1 dead
2 enucleate
3 thick-walled
4 living but non-functional.
Explanation:
Exp:B A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Anatomy of Flowering Plants
271598
Compound sieve plates are found in:
1 Cucurbita
2 Vitis
3 Magnolia
4 Corchorus
Explanation:
Exp:B Compound sieve plates are found in 'vitis', A compound sieve plate has more than one area. When a sieve plates consist of more than one region of pores it is known as a compound sieve tube like in vitis. In compound sieve plates are pores in the plant cell walls that facilitate transport of material.
AP EAMCET-2003
Anatomy of Flowering Plants
271599
Companion cells in plans are associated with :
1 vessels
2 sperms
3 sieve elements
4 guard cells
Explanation:
Exp:C Companion cells in plants are associated with 'sieve elements'. Each companion cell is usually closely associated with the sieve element. These cells are present in the phloem tissue of the flowering plant. The companion cells are specialized parenchymatous cells, which are closely associated with sieve tube elements.
Haryana PMT-2004
Anatomy of Flowering Plants
271603
The stalk of a plant leaf is derived from which one of the following types of plant tissue?
1 Sclerenchyma
2 Parenchyma
3 Chlorenchyma
4 Collenchyma
Explanation:
Exp:D The stalk of a plant leaf is derived from 'collenchyma', type of plants tissue. The collenchyma occurs in layers below the epidermis in dicotyledonous plants. It consists of cells which are much thickened at the corners due to a deposition of cellulose, hemicelluloses and pectin. These cells assimilate food when they contain chloroplasts.
KVPY SA-2014
Anatomy of Flowering Plants
271605
The nature of sieve elements in the phloem are
1 dead
2 enucleate
3 thick-walled
4 living but non-functional.
Explanation:
Exp:B A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells.
