1 Sapwood is involved in conduction of water and minerals from root to leaf
2 Sapwood is the innermost secondary xylem and is lighter in colour
3 Due to deposition of tannins, resins, oils etc., heart wood is dark in colour
4 Heart wood does not conduct water but gives mechanical support
Explanation:
Exp:B Sapwood (Alburnum) : Outer living layers of secondary wood of trees, which in transport of \(\mathrm{H}_{2} \mathrm{O}\) and minerals. Sapwood is the outermost secondary xylem and is lighter in color. Heart wood (Duramen) : Dead central wood of trees, heart wood is darker in color due to deposition of tannins of other substances. - Peripheral region of the secondary xylem is lighter in color. This is term as sapwood. - In the trunk and older branches of large trees, only outer secondary xylem which is sapwood serves in water conduction. - The inner part which is heartwood is composed of dead but structurally strong xylem.
NEET-2020 Phase-I
Anatomy of Flowering Plants
271895
Match the following lists. | List I | List II | | :--- | :--- | | (A) Tyloses | (i) Coenocytic | | (B) Periderm | (ii)Adaxial epidermis | | (C) Motor cells | (iii) Complementary cells | | (D) Laticifers | (iv) Heart wood | | | (v) Conjunctive tissue | The correct match is
271890
As a tree grows older, which of the following increases more rapidly in thickness?
1 Heartwood
2 Sapwood
3 Phloem
4 Cortex
Explanation:
Exp:A In older trees the volume of heartwood increases each year due to the secondary growth. - Heart wood is also called duramen. It is dead central wood of trees.
AIPMT-1994
Anatomy of Flowering Plants
271891
The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem, is called
1 Bast
2 Alburnum
3 Duramen
4 Wood
Explanation:
Exp:C The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem is called duramen. - The amount of duramen or heartwood rises as the tree grows older while the amount of sapwood almost remains constant.
Karnataka CET-2005
Anatomy of Flowering Plants
271888
A secondary growth proceeds, in a dicot stem, the thickness of
1 sapwood increases
2 heartwood increases
3 both sapwood and heartwood increases
4 both sapwood and heartwood remains the same.
Explanation:
Exp:B Secondary growth occur only dicot plants during the secondary growth the thickness of heartwood increases because of the formation of cambium ring which is found between xylem and phloem. They are responsible for secondary growth. - Thus, secondary growth is the outward growth of the plants, making it thicker and wider. Secondary growth is important to woody plants, because they grow much taller than the other plants and need more support in their stems and roots. - Lateral meristem are the dividing cells in secondary growth and are produce secondary tissues.
1 Sapwood is involved in conduction of water and minerals from root to leaf
2 Sapwood is the innermost secondary xylem and is lighter in colour
3 Due to deposition of tannins, resins, oils etc., heart wood is dark in colour
4 Heart wood does not conduct water but gives mechanical support
Explanation:
Exp:B Sapwood (Alburnum) : Outer living layers of secondary wood of trees, which in transport of \(\mathrm{H}_{2} \mathrm{O}\) and minerals. Sapwood is the outermost secondary xylem and is lighter in color. Heart wood (Duramen) : Dead central wood of trees, heart wood is darker in color due to deposition of tannins of other substances. - Peripheral region of the secondary xylem is lighter in color. This is term as sapwood. - In the trunk and older branches of large trees, only outer secondary xylem which is sapwood serves in water conduction. - The inner part which is heartwood is composed of dead but structurally strong xylem.
NEET-2020 Phase-I
Anatomy of Flowering Plants
271895
Match the following lists. | List I | List II | | :--- | :--- | | (A) Tyloses | (i) Coenocytic | | (B) Periderm | (ii)Adaxial epidermis | | (C) Motor cells | (iii) Complementary cells | | (D) Laticifers | (iv) Heart wood | | | (v) Conjunctive tissue | The correct match is
271890
As a tree grows older, which of the following increases more rapidly in thickness?
1 Heartwood
2 Sapwood
3 Phloem
4 Cortex
Explanation:
Exp:A In older trees the volume of heartwood increases each year due to the secondary growth. - Heart wood is also called duramen. It is dead central wood of trees.
AIPMT-1994
Anatomy of Flowering Plants
271891
The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem, is called
1 Bast
2 Alburnum
3 Duramen
4 Wood
Explanation:
Exp:C The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem is called duramen. - The amount of duramen or heartwood rises as the tree grows older while the amount of sapwood almost remains constant.
Karnataka CET-2005
Anatomy of Flowering Plants
271888
A secondary growth proceeds, in a dicot stem, the thickness of
1 sapwood increases
2 heartwood increases
3 both sapwood and heartwood increases
4 both sapwood and heartwood remains the same.
Explanation:
Exp:B Secondary growth occur only dicot plants during the secondary growth the thickness of heartwood increases because of the formation of cambium ring which is found between xylem and phloem. They are responsible for secondary growth. - Thus, secondary growth is the outward growth of the plants, making it thicker and wider. Secondary growth is important to woody plants, because they grow much taller than the other plants and need more support in their stems and roots. - Lateral meristem are the dividing cells in secondary growth and are produce secondary tissues.
1 Sapwood is involved in conduction of water and minerals from root to leaf
2 Sapwood is the innermost secondary xylem and is lighter in colour
3 Due to deposition of tannins, resins, oils etc., heart wood is dark in colour
4 Heart wood does not conduct water but gives mechanical support
Explanation:
Exp:B Sapwood (Alburnum) : Outer living layers of secondary wood of trees, which in transport of \(\mathrm{H}_{2} \mathrm{O}\) and minerals. Sapwood is the outermost secondary xylem and is lighter in color. Heart wood (Duramen) : Dead central wood of trees, heart wood is darker in color due to deposition of tannins of other substances. - Peripheral region of the secondary xylem is lighter in color. This is term as sapwood. - In the trunk and older branches of large trees, only outer secondary xylem which is sapwood serves in water conduction. - The inner part which is heartwood is composed of dead but structurally strong xylem.
NEET-2020 Phase-I
Anatomy of Flowering Plants
271895
Match the following lists. | List I | List II | | :--- | :--- | | (A) Tyloses | (i) Coenocytic | | (B) Periderm | (ii)Adaxial epidermis | | (C) Motor cells | (iii) Complementary cells | | (D) Laticifers | (iv) Heart wood | | | (v) Conjunctive tissue | The correct match is
271890
As a tree grows older, which of the following increases more rapidly in thickness?
1 Heartwood
2 Sapwood
3 Phloem
4 Cortex
Explanation:
Exp:A In older trees the volume of heartwood increases each year due to the secondary growth. - Heart wood is also called duramen. It is dead central wood of trees.
AIPMT-1994
Anatomy of Flowering Plants
271891
The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem, is called
1 Bast
2 Alburnum
3 Duramen
4 Wood
Explanation:
Exp:C The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem is called duramen. - The amount of duramen or heartwood rises as the tree grows older while the amount of sapwood almost remains constant.
Karnataka CET-2005
Anatomy of Flowering Plants
271888
A secondary growth proceeds, in a dicot stem, the thickness of
1 sapwood increases
2 heartwood increases
3 both sapwood and heartwood increases
4 both sapwood and heartwood remains the same.
Explanation:
Exp:B Secondary growth occur only dicot plants during the secondary growth the thickness of heartwood increases because of the formation of cambium ring which is found between xylem and phloem. They are responsible for secondary growth. - Thus, secondary growth is the outward growth of the plants, making it thicker and wider. Secondary growth is important to woody plants, because they grow much taller than the other plants and need more support in their stems and roots. - Lateral meristem are the dividing cells in secondary growth and are produce secondary tissues.
1 Sapwood is involved in conduction of water and minerals from root to leaf
2 Sapwood is the innermost secondary xylem and is lighter in colour
3 Due to deposition of tannins, resins, oils etc., heart wood is dark in colour
4 Heart wood does not conduct water but gives mechanical support
Explanation:
Exp:B Sapwood (Alburnum) : Outer living layers of secondary wood of trees, which in transport of \(\mathrm{H}_{2} \mathrm{O}\) and minerals. Sapwood is the outermost secondary xylem and is lighter in color. Heart wood (Duramen) : Dead central wood of trees, heart wood is darker in color due to deposition of tannins of other substances. - Peripheral region of the secondary xylem is lighter in color. This is term as sapwood. - In the trunk and older branches of large trees, only outer secondary xylem which is sapwood serves in water conduction. - The inner part which is heartwood is composed of dead but structurally strong xylem.
NEET-2020 Phase-I
Anatomy of Flowering Plants
271895
Match the following lists. | List I | List II | | :--- | :--- | | (A) Tyloses | (i) Coenocytic | | (B) Periderm | (ii)Adaxial epidermis | | (C) Motor cells | (iii) Complementary cells | | (D) Laticifers | (iv) Heart wood | | | (v) Conjunctive tissue | The correct match is
271890
As a tree grows older, which of the following increases more rapidly in thickness?
1 Heartwood
2 Sapwood
3 Phloem
4 Cortex
Explanation:
Exp:A In older trees the volume of heartwood increases each year due to the secondary growth. - Heart wood is also called duramen. It is dead central wood of trees.
AIPMT-1994
Anatomy of Flowering Plants
271891
The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem, is called
1 Bast
2 Alburnum
3 Duramen
4 Wood
Explanation:
Exp:C The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem is called duramen. - The amount of duramen or heartwood rises as the tree grows older while the amount of sapwood almost remains constant.
Karnataka CET-2005
Anatomy of Flowering Plants
271888
A secondary growth proceeds, in a dicot stem, the thickness of
1 sapwood increases
2 heartwood increases
3 both sapwood and heartwood increases
4 both sapwood and heartwood remains the same.
Explanation:
Exp:B Secondary growth occur only dicot plants during the secondary growth the thickness of heartwood increases because of the formation of cambium ring which is found between xylem and phloem. They are responsible for secondary growth. - Thus, secondary growth is the outward growth of the plants, making it thicker and wider. Secondary growth is important to woody plants, because they grow much taller than the other plants and need more support in their stems and roots. - Lateral meristem are the dividing cells in secondary growth and are produce secondary tissues.
1 Sapwood is involved in conduction of water and minerals from root to leaf
2 Sapwood is the innermost secondary xylem and is lighter in colour
3 Due to deposition of tannins, resins, oils etc., heart wood is dark in colour
4 Heart wood does not conduct water but gives mechanical support
Explanation:
Exp:B Sapwood (Alburnum) : Outer living layers of secondary wood of trees, which in transport of \(\mathrm{H}_{2} \mathrm{O}\) and minerals. Sapwood is the outermost secondary xylem and is lighter in color. Heart wood (Duramen) : Dead central wood of trees, heart wood is darker in color due to deposition of tannins of other substances. - Peripheral region of the secondary xylem is lighter in color. This is term as sapwood. - In the trunk and older branches of large trees, only outer secondary xylem which is sapwood serves in water conduction. - The inner part which is heartwood is composed of dead but structurally strong xylem.
NEET-2020 Phase-I
Anatomy of Flowering Plants
271895
Match the following lists. | List I | List II | | :--- | :--- | | (A) Tyloses | (i) Coenocytic | | (B) Periderm | (ii)Adaxial epidermis | | (C) Motor cells | (iii) Complementary cells | | (D) Laticifers | (iv) Heart wood | | | (v) Conjunctive tissue | The correct match is
271890
As a tree grows older, which of the following increases more rapidly in thickness?
1 Heartwood
2 Sapwood
3 Phloem
4 Cortex
Explanation:
Exp:A In older trees the volume of heartwood increases each year due to the secondary growth. - Heart wood is also called duramen. It is dead central wood of trees.
AIPMT-1994
Anatomy of Flowering Plants
271891
The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem, is called
1 Bast
2 Alburnum
3 Duramen
4 Wood
Explanation:
Exp:C The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem is called duramen. - The amount of duramen or heartwood rises as the tree grows older while the amount of sapwood almost remains constant.
Karnataka CET-2005
Anatomy of Flowering Plants
271888
A secondary growth proceeds, in a dicot stem, the thickness of
1 sapwood increases
2 heartwood increases
3 both sapwood and heartwood increases
4 both sapwood and heartwood remains the same.
Explanation:
Exp:B Secondary growth occur only dicot plants during the secondary growth the thickness of heartwood increases because of the formation of cambium ring which is found between xylem and phloem. They are responsible for secondary growth. - Thus, secondary growth is the outward growth of the plants, making it thicker and wider. Secondary growth is important to woody plants, because they grow much taller than the other plants and need more support in their stems and roots. - Lateral meristem are the dividing cells in secondary growth and are produce secondary tissues.
