271674
Companion cells in plants are associated with
1 Vessels
2 Sperms
3 Sieve elements
4 Guard cells
Explanation:
Exp:C Companion cells are present in the phloem tissue of the flowering plant. This tissue is a special type of parenchyma cells. These cells are closely associated with the sieve tubes elements. They are connected via cytoplasm of companion cells and plasmodesmata.
AIIMS-2004
Anatomy of Flowering Plants
271677
Amphivasal or leptocentric vascular bundles are found in
1 Maize and wheat
2 Helianthus and Cucurbita
3 Dracaena and Yucca
4 Cycas and Dryopteris
Explanation:
Exp:C When xylem surrounds the phloem tissue from all sides the vascular bundle is called as 'amphivasal or leptocentric vascular bundle'. Such vascular bundles are seen in monocot plant, like Dracaena and Yucca. Bicollateral vascular bundles are seen in Helianthus and Cucurbita. Maize and wheat-collateral closed vascular bundles. Cycas and Dryopteris - Amphicribal vascular bundles.
JIPMER-2002
Anatomy of Flowering Plants
271683
Casparian strip is found in:
1 vascular bundle
2 between stem and root
3 radial and inner wall of endodermis
4 none of the above
Explanation:
Exp:C Casparian strips are the ring-like cell wall modifications found in the root of the endodermis of vascular plants. It acts as a barrier to harmful chemicals like herbicides. - It is found in the radial and inner wall of endodermis. Endoderm forms the central and innermost layer of cortex in terrestrial plants.
AMU-2011
Anatomy of Flowering Plants
271685
Mature sieve tube lacks :
1 nucleus
2 nucleus and chloroplast
3 nucleolus and ER
4 all of the above
Explanation:
Exp:A Sieve tubes are thin, walled living cells made up of sieve tube elements. Its cytoplasm lacks nucleus. - Sieve tube element develops from a common initial cell along with companion cell (with nucleus).
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Anatomy of Flowering Plants
271674
Companion cells in plants are associated with
1 Vessels
2 Sperms
3 Sieve elements
4 Guard cells
Explanation:
Exp:C Companion cells are present in the phloem tissue of the flowering plant. This tissue is a special type of parenchyma cells. These cells are closely associated with the sieve tubes elements. They are connected via cytoplasm of companion cells and plasmodesmata.
AIIMS-2004
Anatomy of Flowering Plants
271677
Amphivasal or leptocentric vascular bundles are found in
1 Maize and wheat
2 Helianthus and Cucurbita
3 Dracaena and Yucca
4 Cycas and Dryopteris
Explanation:
Exp:C When xylem surrounds the phloem tissue from all sides the vascular bundle is called as 'amphivasal or leptocentric vascular bundle'. Such vascular bundles are seen in monocot plant, like Dracaena and Yucca. Bicollateral vascular bundles are seen in Helianthus and Cucurbita. Maize and wheat-collateral closed vascular bundles. Cycas and Dryopteris - Amphicribal vascular bundles.
JIPMER-2002
Anatomy of Flowering Plants
271683
Casparian strip is found in:
1 vascular bundle
2 between stem and root
3 radial and inner wall of endodermis
4 none of the above
Explanation:
Exp:C Casparian strips are the ring-like cell wall modifications found in the root of the endodermis of vascular plants. It acts as a barrier to harmful chemicals like herbicides. - It is found in the radial and inner wall of endodermis. Endoderm forms the central and innermost layer of cortex in terrestrial plants.
AMU-2011
Anatomy of Flowering Plants
271685
Mature sieve tube lacks :
1 nucleus
2 nucleus and chloroplast
3 nucleolus and ER
4 all of the above
Explanation:
Exp:A Sieve tubes are thin, walled living cells made up of sieve tube elements. Its cytoplasm lacks nucleus. - Sieve tube element develops from a common initial cell along with companion cell (with nucleus).
271674
Companion cells in plants are associated with
1 Vessels
2 Sperms
3 Sieve elements
4 Guard cells
Explanation:
Exp:C Companion cells are present in the phloem tissue of the flowering plant. This tissue is a special type of parenchyma cells. These cells are closely associated with the sieve tubes elements. They are connected via cytoplasm of companion cells and plasmodesmata.
AIIMS-2004
Anatomy of Flowering Plants
271677
Amphivasal or leptocentric vascular bundles are found in
1 Maize and wheat
2 Helianthus and Cucurbita
3 Dracaena and Yucca
4 Cycas and Dryopteris
Explanation:
Exp:C When xylem surrounds the phloem tissue from all sides the vascular bundle is called as 'amphivasal or leptocentric vascular bundle'. Such vascular bundles are seen in monocot plant, like Dracaena and Yucca. Bicollateral vascular bundles are seen in Helianthus and Cucurbita. Maize and wheat-collateral closed vascular bundles. Cycas and Dryopteris - Amphicribal vascular bundles.
JIPMER-2002
Anatomy of Flowering Plants
271683
Casparian strip is found in:
1 vascular bundle
2 between stem and root
3 radial and inner wall of endodermis
4 none of the above
Explanation:
Exp:C Casparian strips are the ring-like cell wall modifications found in the root of the endodermis of vascular plants. It acts as a barrier to harmful chemicals like herbicides. - It is found in the radial and inner wall of endodermis. Endoderm forms the central and innermost layer of cortex in terrestrial plants.
AMU-2011
Anatomy of Flowering Plants
271685
Mature sieve tube lacks :
1 nucleus
2 nucleus and chloroplast
3 nucleolus and ER
4 all of the above
Explanation:
Exp:A Sieve tubes are thin, walled living cells made up of sieve tube elements. Its cytoplasm lacks nucleus. - Sieve tube element develops from a common initial cell along with companion cell (with nucleus).
271674
Companion cells in plants are associated with
1 Vessels
2 Sperms
3 Sieve elements
4 Guard cells
Explanation:
Exp:C Companion cells are present in the phloem tissue of the flowering plant. This tissue is a special type of parenchyma cells. These cells are closely associated with the sieve tubes elements. They are connected via cytoplasm of companion cells and plasmodesmata.
AIIMS-2004
Anatomy of Flowering Plants
271677
Amphivasal or leptocentric vascular bundles are found in
1 Maize and wheat
2 Helianthus and Cucurbita
3 Dracaena and Yucca
4 Cycas and Dryopteris
Explanation:
Exp:C When xylem surrounds the phloem tissue from all sides the vascular bundle is called as 'amphivasal or leptocentric vascular bundle'. Such vascular bundles are seen in monocot plant, like Dracaena and Yucca. Bicollateral vascular bundles are seen in Helianthus and Cucurbita. Maize and wheat-collateral closed vascular bundles. Cycas and Dryopteris - Amphicribal vascular bundles.
JIPMER-2002
Anatomy of Flowering Plants
271683
Casparian strip is found in:
1 vascular bundle
2 between stem and root
3 radial and inner wall of endodermis
4 none of the above
Explanation:
Exp:C Casparian strips are the ring-like cell wall modifications found in the root of the endodermis of vascular plants. It acts as a barrier to harmful chemicals like herbicides. - It is found in the radial and inner wall of endodermis. Endoderm forms the central and innermost layer of cortex in terrestrial plants.
AMU-2011
Anatomy of Flowering Plants
271685
Mature sieve tube lacks :
1 nucleus
2 nucleus and chloroplast
3 nucleolus and ER
4 all of the above
Explanation:
Exp:A Sieve tubes are thin, walled living cells made up of sieve tube elements. Its cytoplasm lacks nucleus. - Sieve tube element develops from a common initial cell along with companion cell (with nucleus).
