(b)Velamen tissue is water - absorbing tissue which can absorb atmospheric humidity. It is present in aerial root of orchids.
NCERT 90
Anatomy of Flowering Plants
271239
Casparian strips occur in
1 cortex
2 pericycle
3 epidermis
4 endodermis
Explanation:
(d)Casparian strips are found in endodermis of roots. It is a band of thickening which runs along the radial and tangential walls of endodermal cells. It is made up of suberin and lignin. Casparian strips prevent plasmolysis of endodermal cells. Cortex is found below epiblema. It is made up of thin-walled parenchymal cells. Epidermis is the outermost layer made up of thin-walled flattened and slightly elongated parenchymal cells. Pericycle is found below endodermis and it is made of parenchymatous cells.
NCERT 90
Anatomy of Flowering Plants
271240
Match the following and choose correct answer.
Column-I Column-II
(a) Radial vascular bundle (1) Root
(b) Polyarch xylem (2) Monocot root
(c) Well-developed pith (3) Dicot stem and monocot root
(a)Cortex tissue is found in between the epidermis and vascular bundles. It is multilayered, having 4–5 layers of cells. It is made up of parenchymatous cells with big intercellular spaces.
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Anatomy of Flowering Plants
271238
Velamen tissue in orchids is found in
1 shoot
2 root
3 leaves
4 flowers
Explanation:
(b)Velamen tissue is water - absorbing tissue which can absorb atmospheric humidity. It is present in aerial root of orchids.
NCERT 90
Anatomy of Flowering Plants
271239
Casparian strips occur in
1 cortex
2 pericycle
3 epidermis
4 endodermis
Explanation:
(d)Casparian strips are found in endodermis of roots. It is a band of thickening which runs along the radial and tangential walls of endodermal cells. It is made up of suberin and lignin. Casparian strips prevent plasmolysis of endodermal cells. Cortex is found below epiblema. It is made up of thin-walled parenchymal cells. Epidermis is the outermost layer made up of thin-walled flattened and slightly elongated parenchymal cells. Pericycle is found below endodermis and it is made of parenchymatous cells.
NCERT 90
Anatomy of Flowering Plants
271240
Match the following and choose correct answer.
Column-I Column-II
(a) Radial vascular bundle (1) Root
(b) Polyarch xylem (2) Monocot root
(c) Well-developed pith (3) Dicot stem and monocot root
(a)Cortex tissue is found in between the epidermis and vascular bundles. It is multilayered, having 4–5 layers of cells. It is made up of parenchymatous cells with big intercellular spaces.
(b)Velamen tissue is water - absorbing tissue which can absorb atmospheric humidity. It is present in aerial root of orchids.
NCERT 90
Anatomy of Flowering Plants
271239
Casparian strips occur in
1 cortex
2 pericycle
3 epidermis
4 endodermis
Explanation:
(d)Casparian strips are found in endodermis of roots. It is a band of thickening which runs along the radial and tangential walls of endodermal cells. It is made up of suberin and lignin. Casparian strips prevent plasmolysis of endodermal cells. Cortex is found below epiblema. It is made up of thin-walled parenchymal cells. Epidermis is the outermost layer made up of thin-walled flattened and slightly elongated parenchymal cells. Pericycle is found below endodermis and it is made of parenchymatous cells.
NCERT 90
Anatomy of Flowering Plants
271240
Match the following and choose correct answer.
Column-I Column-II
(a) Radial vascular bundle (1) Root
(b) Polyarch xylem (2) Monocot root
(c) Well-developed pith (3) Dicot stem and monocot root
(a)Cortex tissue is found in between the epidermis and vascular bundles. It is multilayered, having 4–5 layers of cells. It is made up of parenchymatous cells with big intercellular spaces.
(b)Velamen tissue is water - absorbing tissue which can absorb atmospheric humidity. It is present in aerial root of orchids.
NCERT 90
Anatomy of Flowering Plants
271239
Casparian strips occur in
1 cortex
2 pericycle
3 epidermis
4 endodermis
Explanation:
(d)Casparian strips are found in endodermis of roots. It is a band of thickening which runs along the radial and tangential walls of endodermal cells. It is made up of suberin and lignin. Casparian strips prevent plasmolysis of endodermal cells. Cortex is found below epiblema. It is made up of thin-walled parenchymal cells. Epidermis is the outermost layer made up of thin-walled flattened and slightly elongated parenchymal cells. Pericycle is found below endodermis and it is made of parenchymatous cells.
NCERT 90
Anatomy of Flowering Plants
271240
Match the following and choose correct answer.
Column-I Column-II
(a) Radial vascular bundle (1) Root
(b) Polyarch xylem (2) Monocot root
(c) Well-developed pith (3) Dicot stem and monocot root
(a)Cortex tissue is found in between the epidermis and vascular bundles. It is multilayered, having 4–5 layers of cells. It is made up of parenchymatous cells with big intercellular spaces.