271374
Xylem functions as a conducting tissue for water and minerals from___to the____and___
1 roots, stems, leaves
2 stems, roots, leaves
3 leaves, stems, roots
4 leaves, stems, leaves
Explanation:
(a) Xylem is a complex permanent tissue mainly responsible for conduction of water and minerals from the roots to the top of plants (unidirectional).
Anatomy of Flowering Plants
271375
Which one of the following have vessels as their characteristic feature?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Bryophytes
Explanation:
(a) The presence of vessels is a characteristic feature of angiosperms. Vessels help in conduction of water and dissolved salts form roots to the different parts of the shoot and provides mechanical support.
Anatomy of Flowering Plants
271376
An organised & differentiated cellular structure having cytoplasm but no nucleus is called
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids
Explanation:
(c) A mature sieve element possess a peripheral cytoplasm and a large vacuole but lacks nucleus. Sieve tube consists of row of cells arranged one above the other to form long pipes. Sieve tube occurs in angiosperms. The functions of sieve tubes are controlled by the nucleus of companion cells.
Anatomy of Flowering Plants
271377
A vascular bundle in which the protoxylem is pointing to the periphery is called
1 endarch
2 exarch
3 radial
4 closed
Explanation:
(b) In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
271374
Xylem functions as a conducting tissue for water and minerals from___to the____and___
1 roots, stems, leaves
2 stems, roots, leaves
3 leaves, stems, roots
4 leaves, stems, leaves
Explanation:
(a) Xylem is a complex permanent tissue mainly responsible for conduction of water and minerals from the roots to the top of plants (unidirectional).
Anatomy of Flowering Plants
271375
Which one of the following have vessels as their characteristic feature?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Bryophytes
Explanation:
(a) The presence of vessels is a characteristic feature of angiosperms. Vessels help in conduction of water and dissolved salts form roots to the different parts of the shoot and provides mechanical support.
Anatomy of Flowering Plants
271376
An organised & differentiated cellular structure having cytoplasm but no nucleus is called
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids
Explanation:
(c) A mature sieve element possess a peripheral cytoplasm and a large vacuole but lacks nucleus. Sieve tube consists of row of cells arranged one above the other to form long pipes. Sieve tube occurs in angiosperms. The functions of sieve tubes are controlled by the nucleus of companion cells.
Anatomy of Flowering Plants
271377
A vascular bundle in which the protoxylem is pointing to the periphery is called
1 endarch
2 exarch
3 radial
4 closed
Explanation:
(b) In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
271374
Xylem functions as a conducting tissue for water and minerals from___to the____and___
1 roots, stems, leaves
2 stems, roots, leaves
3 leaves, stems, roots
4 leaves, stems, leaves
Explanation:
(a) Xylem is a complex permanent tissue mainly responsible for conduction of water and minerals from the roots to the top of plants (unidirectional).
Anatomy of Flowering Plants
271375
Which one of the following have vessels as their characteristic feature?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Bryophytes
Explanation:
(a) The presence of vessels is a characteristic feature of angiosperms. Vessels help in conduction of water and dissolved salts form roots to the different parts of the shoot and provides mechanical support.
Anatomy of Flowering Plants
271376
An organised & differentiated cellular structure having cytoplasm but no nucleus is called
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids
Explanation:
(c) A mature sieve element possess a peripheral cytoplasm and a large vacuole but lacks nucleus. Sieve tube consists of row of cells arranged one above the other to form long pipes. Sieve tube occurs in angiosperms. The functions of sieve tubes are controlled by the nucleus of companion cells.
Anatomy of Flowering Plants
271377
A vascular bundle in which the protoxylem is pointing to the periphery is called
1 endarch
2 exarch
3 radial
4 closed
Explanation:
(b) In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
271374
Xylem functions as a conducting tissue for water and minerals from___to the____and___
1 roots, stems, leaves
2 stems, roots, leaves
3 leaves, stems, roots
4 leaves, stems, leaves
Explanation:
(a) Xylem is a complex permanent tissue mainly responsible for conduction of water and minerals from the roots to the top of plants (unidirectional).
Anatomy of Flowering Plants
271375
Which one of the following have vessels as their characteristic feature?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Bryophytes
Explanation:
(a) The presence of vessels is a characteristic feature of angiosperms. Vessels help in conduction of water and dissolved salts form roots to the different parts of the shoot and provides mechanical support.
Anatomy of Flowering Plants
271376
An organised & differentiated cellular structure having cytoplasm but no nucleus is called
1 vessels
2 xylem parenchyma
3 sieve tubes
4 tracheids
Explanation:
(c) A mature sieve element possess a peripheral cytoplasm and a large vacuole but lacks nucleus. Sieve tube consists of row of cells arranged one above the other to form long pipes. Sieve tube occurs in angiosperms. The functions of sieve tubes are controlled by the nucleus of companion cells.
Anatomy of Flowering Plants
271377
A vascular bundle in which the protoxylem is pointing to the periphery is called
1 endarch
2 exarch
3 radial
4 closed
Explanation:
(b) In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
