3 all angiosperms, all gymnosperms and some pteriodophyta
4 all pteridophyta
Explanation:
(b) Generally gymnosperms do not have vessels but a few gymnosperms with vessels are Ephedra, Smilax etc. Most of angiosperms have vessels except of few e.g., Trochodendron.
Anatomy of Flowering Plants
271390
Cork cambium and vascular cambium are
1 parts of secondary xylem and phloem
2 parts of pericycle
3 lateral meristems
4 apical meristems
Explanation:
(c) Cork cambium and vascular cambium are responsible for secondary growth which increases the girth of the stem. Therefore, they are considered as lateral meristems .
Anatomy of Flowering Plants
271391
Companion cells are closely associated with:
1 Sieve elements
2 Vessel elements
3 Trichomes
4 Guard cells
Explanation:
(a) Companion cells are narrow, elongated and thin walled living cells. They lie on the sides of the sieve tubes and are closely associated with them through compound plasmodesmata.
Anatomy of Flowering Plants
271436
The hypodermis tissues in dicot and monocot stems respectively
1 Collenchyma and Sclerenchyma.
2 Sclerenchyma and Collenchyma.
3 Sclerenchyma in both.
4 Collenchyma in both.
Explanation:
Exp:A Hypodermis is collenchymatous (green) in dicot stem and sclerenchymatous (non green) in monocot stem.
3 all angiosperms, all gymnosperms and some pteriodophyta
4 all pteridophyta
Explanation:
(b) Generally gymnosperms do not have vessels but a few gymnosperms with vessels are Ephedra, Smilax etc. Most of angiosperms have vessels except of few e.g., Trochodendron.
Anatomy of Flowering Plants
271390
Cork cambium and vascular cambium are
1 parts of secondary xylem and phloem
2 parts of pericycle
3 lateral meristems
4 apical meristems
Explanation:
(c) Cork cambium and vascular cambium are responsible for secondary growth which increases the girth of the stem. Therefore, they are considered as lateral meristems .
Anatomy of Flowering Plants
271391
Companion cells are closely associated with:
1 Sieve elements
2 Vessel elements
3 Trichomes
4 Guard cells
Explanation:
(a) Companion cells are narrow, elongated and thin walled living cells. They lie on the sides of the sieve tubes and are closely associated with them through compound plasmodesmata.
Anatomy of Flowering Plants
271436
The hypodermis tissues in dicot and monocot stems respectively
1 Collenchyma and Sclerenchyma.
2 Sclerenchyma and Collenchyma.
3 Sclerenchyma in both.
4 Collenchyma in both.
Explanation:
Exp:A Hypodermis is collenchymatous (green) in dicot stem and sclerenchymatous (non green) in monocot stem.
3 all angiosperms, all gymnosperms and some pteriodophyta
4 all pteridophyta
Explanation:
(b) Generally gymnosperms do not have vessels but a few gymnosperms with vessels are Ephedra, Smilax etc. Most of angiosperms have vessels except of few e.g., Trochodendron.
Anatomy of Flowering Plants
271390
Cork cambium and vascular cambium are
1 parts of secondary xylem and phloem
2 parts of pericycle
3 lateral meristems
4 apical meristems
Explanation:
(c) Cork cambium and vascular cambium are responsible for secondary growth which increases the girth of the stem. Therefore, they are considered as lateral meristems .
Anatomy of Flowering Plants
271391
Companion cells are closely associated with:
1 Sieve elements
2 Vessel elements
3 Trichomes
4 Guard cells
Explanation:
(a) Companion cells are narrow, elongated and thin walled living cells. They lie on the sides of the sieve tubes and are closely associated with them through compound plasmodesmata.
Anatomy of Flowering Plants
271436
The hypodermis tissues in dicot and monocot stems respectively
1 Collenchyma and Sclerenchyma.
2 Sclerenchyma and Collenchyma.
3 Sclerenchyma in both.
4 Collenchyma in both.
Explanation:
Exp:A Hypodermis is collenchymatous (green) in dicot stem and sclerenchymatous (non green) in monocot stem.
3 all angiosperms, all gymnosperms and some pteriodophyta
4 all pteridophyta
Explanation:
(b) Generally gymnosperms do not have vessels but a few gymnosperms with vessels are Ephedra, Smilax etc. Most of angiosperms have vessels except of few e.g., Trochodendron.
Anatomy of Flowering Plants
271390
Cork cambium and vascular cambium are
1 parts of secondary xylem and phloem
2 parts of pericycle
3 lateral meristems
4 apical meristems
Explanation:
(c) Cork cambium and vascular cambium are responsible for secondary growth which increases the girth of the stem. Therefore, they are considered as lateral meristems .
Anatomy of Flowering Plants
271391
Companion cells are closely associated with:
1 Sieve elements
2 Vessel elements
3 Trichomes
4 Guard cells
Explanation:
(a) Companion cells are narrow, elongated and thin walled living cells. They lie on the sides of the sieve tubes and are closely associated with them through compound plasmodesmata.
Anatomy of Flowering Plants
271436
The hypodermis tissues in dicot and monocot stems respectively
1 Collenchyma and Sclerenchyma.
2 Sclerenchyma and Collenchyma.
3 Sclerenchyma in both.
4 Collenchyma in both.
Explanation:
Exp:A Hypodermis is collenchymatous (green) in dicot stem and sclerenchymatous (non green) in monocot stem.
