334005
In old dicot stems, a major part of the wood is filled up with tannins, resins, gums, etc. This part of wood is called
1 Hard wood
2 Heart wood
3 Sap wood
4 Soft wood
Explanation:
In old trees, the greater part of secondary xylem is dark brown due to deposition of organic compounds like tannins, resins, oils, gums, aromatic substances and essential oils in the central or innermost layers of the stem. This region comprises dead elements with highly lignified walls and is called heartwood.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334006
Heart wood
1 Outer region of secondary xylem
2 Inner region of secondary xylem
3 Outer region of primary xylem
4 Inner region of primary xylem
Explanation:
Heart wood is inner region of secondary xylem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334007
Statement A : The heartwood conducts water and gives mechanical support to the stem. Statement B : The peripheral region of the secondary xylem, is lighter in colour and is known as the sapwood.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The heartwood does not conduct water but it gives mechanical support to the stem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334008
Match the columns I and II. Column I Column II A Heartwood P Light-coloured outer region B Late wood Q Large number of xylary elements C Sapwood R Dead and non-conducting elements D Early wood S Narrow vessels
Heart wood - Dead and non-conducting elements Late wood - Narrow vessels Sapwood - Light-colored outer region Early wood-Large number of xylary elements.
334005
In old dicot stems, a major part of the wood is filled up with tannins, resins, gums, etc. This part of wood is called
1 Hard wood
2 Heart wood
3 Sap wood
4 Soft wood
Explanation:
In old trees, the greater part of secondary xylem is dark brown due to deposition of organic compounds like tannins, resins, oils, gums, aromatic substances and essential oils in the central or innermost layers of the stem. This region comprises dead elements with highly lignified walls and is called heartwood.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334006
Heart wood
1 Outer region of secondary xylem
2 Inner region of secondary xylem
3 Outer region of primary xylem
4 Inner region of primary xylem
Explanation:
Heart wood is inner region of secondary xylem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334007
Statement A : The heartwood conducts water and gives mechanical support to the stem. Statement B : The peripheral region of the secondary xylem, is lighter in colour and is known as the sapwood.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The heartwood does not conduct water but it gives mechanical support to the stem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334008
Match the columns I and II. Column I Column II A Heartwood P Light-coloured outer region B Late wood Q Large number of xylary elements C Sapwood R Dead and non-conducting elements D Early wood S Narrow vessels
Heart wood - Dead and non-conducting elements Late wood - Narrow vessels Sapwood - Light-colored outer region Early wood-Large number of xylary elements.
334005
In old dicot stems, a major part of the wood is filled up with tannins, resins, gums, etc. This part of wood is called
1 Hard wood
2 Heart wood
3 Sap wood
4 Soft wood
Explanation:
In old trees, the greater part of secondary xylem is dark brown due to deposition of organic compounds like tannins, resins, oils, gums, aromatic substances and essential oils in the central or innermost layers of the stem. This region comprises dead elements with highly lignified walls and is called heartwood.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334006
Heart wood
1 Outer region of secondary xylem
2 Inner region of secondary xylem
3 Outer region of primary xylem
4 Inner region of primary xylem
Explanation:
Heart wood is inner region of secondary xylem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334007
Statement A : The heartwood conducts water and gives mechanical support to the stem. Statement B : The peripheral region of the secondary xylem, is lighter in colour and is known as the sapwood.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The heartwood does not conduct water but it gives mechanical support to the stem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334008
Match the columns I and II. Column I Column II A Heartwood P Light-coloured outer region B Late wood Q Large number of xylary elements C Sapwood R Dead and non-conducting elements D Early wood S Narrow vessels
Heart wood - Dead and non-conducting elements Late wood - Narrow vessels Sapwood - Light-colored outer region Early wood-Large number of xylary elements.
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BIOXI06: ANATOMY OF FLOWERING PLANTS
334005
In old dicot stems, a major part of the wood is filled up with tannins, resins, gums, etc. This part of wood is called
1 Hard wood
2 Heart wood
3 Sap wood
4 Soft wood
Explanation:
In old trees, the greater part of secondary xylem is dark brown due to deposition of organic compounds like tannins, resins, oils, gums, aromatic substances and essential oils in the central or innermost layers of the stem. This region comprises dead elements with highly lignified walls and is called heartwood.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334006
Heart wood
1 Outer region of secondary xylem
2 Inner region of secondary xylem
3 Outer region of primary xylem
4 Inner region of primary xylem
Explanation:
Heart wood is inner region of secondary xylem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334007
Statement A : The heartwood conducts water and gives mechanical support to the stem. Statement B : The peripheral region of the secondary xylem, is lighter in colour and is known as the sapwood.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The heartwood does not conduct water but it gives mechanical support to the stem.
BIOXI06: ANATOMY OF FLOWERING PLANTS
334008
Match the columns I and II. Column I Column II A Heartwood P Light-coloured outer region B Late wood Q Large number of xylary elements C Sapwood R Dead and non-conducting elements D Early wood S Narrow vessels
Heart wood - Dead and non-conducting elements Late wood - Narrow vessels Sapwood - Light-colored outer region Early wood-Large number of xylary elements.
