271236
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
1 It is retained in the centre of the axis.
2 It gets crushed.
3 May or may not get crushed.
4 It gets surrounded by primary phloem.
Explanation:
(a)The fate of primary xylem in a dicot root showing extensive growth because it is retained in the centre of the axis.
NCERT 87
Anatomy of Flowering Plants
271237
Which of the following is not a characteristic feature of the anatomy of dicotyledonous root?
1 Radial vascular bundles
2 Secondary growth
3 Pith little or absent
4 Vascular bundles 15 – 20
Explanation:
(d)In dicots, vascular bundles are 15 to 20. These are open, exarch and take part in secondary growth in stem as well as roots.
NCERT 90–91
Anatomy of Flowering Plants
271233
These types of vascular bundles (A, B and C) are present in
1 A - Monocot leaf: B - Dicot stem: C - Monocot stem
2 A - Root: B - Dicot stem: C - Monocot stem
3 A - Root: B - Monocot stem: C - Dicot stem
4 A - Monocot root: B - Monocot leaf: C - Monocot stem
Explanation:
(c)The vascular bundles in roots are radially arranged i.e., the xylem and phloem are present on separate radica. Vascular bundle of monocot stem does not have cambium those are closed. The vascular bundles of dicot stem has cambium so they are referred to as open vascular bundles.
Anatomy of Flowering Plants
271234
Epiblema of roots is equivalent to
1 pericycle
2 endodermis
3 epidermis
4 stele
Explanation:
(c)The outer most (Piliferous)layer is epidermis (epiblem(a)or rhizodermis. It is just one thick layer of cells which protects roots.
NCERT 90
Anatomy of Flowering Plants
271235
The vascular bundles in roots are always
1 Cojoint
2 Collateral
3 Radial
4 None of these
Explanation:
(c)The vascular bundles in roots are always radially as there is presence of xylem and phloem tissues on different radii.
271236
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
1 It is retained in the centre of the axis.
2 It gets crushed.
3 May or may not get crushed.
4 It gets surrounded by primary phloem.
Explanation:
(a)The fate of primary xylem in a dicot root showing extensive growth because it is retained in the centre of the axis.
NCERT 87
Anatomy of Flowering Plants
271237
Which of the following is not a characteristic feature of the anatomy of dicotyledonous root?
1 Radial vascular bundles
2 Secondary growth
3 Pith little or absent
4 Vascular bundles 15 – 20
Explanation:
(d)In dicots, vascular bundles are 15 to 20. These are open, exarch and take part in secondary growth in stem as well as roots.
NCERT 90–91
Anatomy of Flowering Plants
271233
These types of vascular bundles (A, B and C) are present in
1 A - Monocot leaf: B - Dicot stem: C - Monocot stem
2 A - Root: B - Dicot stem: C - Monocot stem
3 A - Root: B - Monocot stem: C - Dicot stem
4 A - Monocot root: B - Monocot leaf: C - Monocot stem
Explanation:
(c)The vascular bundles in roots are radially arranged i.e., the xylem and phloem are present on separate radica. Vascular bundle of monocot stem does not have cambium those are closed. The vascular bundles of dicot stem has cambium so they are referred to as open vascular bundles.
Anatomy of Flowering Plants
271234
Epiblema of roots is equivalent to
1 pericycle
2 endodermis
3 epidermis
4 stele
Explanation:
(c)The outer most (Piliferous)layer is epidermis (epiblem(a)or rhizodermis. It is just one thick layer of cells which protects roots.
NCERT 90
Anatomy of Flowering Plants
271235
The vascular bundles in roots are always
1 Cojoint
2 Collateral
3 Radial
4 None of these
Explanation:
(c)The vascular bundles in roots are always radially as there is presence of xylem and phloem tissues on different radii.
271236
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
1 It is retained in the centre of the axis.
2 It gets crushed.
3 May or may not get crushed.
4 It gets surrounded by primary phloem.
Explanation:
(a)The fate of primary xylem in a dicot root showing extensive growth because it is retained in the centre of the axis.
NCERT 87
Anatomy of Flowering Plants
271237
Which of the following is not a characteristic feature of the anatomy of dicotyledonous root?
1 Radial vascular bundles
2 Secondary growth
3 Pith little or absent
4 Vascular bundles 15 – 20
Explanation:
(d)In dicots, vascular bundles are 15 to 20. These are open, exarch and take part in secondary growth in stem as well as roots.
NCERT 90–91
Anatomy of Flowering Plants
271233
These types of vascular bundles (A, B and C) are present in
1 A - Monocot leaf: B - Dicot stem: C - Monocot stem
2 A - Root: B - Dicot stem: C - Monocot stem
3 A - Root: B - Monocot stem: C - Dicot stem
4 A - Monocot root: B - Monocot leaf: C - Monocot stem
Explanation:
(c)The vascular bundles in roots are radially arranged i.e., the xylem and phloem are present on separate radica. Vascular bundle of monocot stem does not have cambium those are closed. The vascular bundles of dicot stem has cambium so they are referred to as open vascular bundles.
Anatomy of Flowering Plants
271234
Epiblema of roots is equivalent to
1 pericycle
2 endodermis
3 epidermis
4 stele
Explanation:
(c)The outer most (Piliferous)layer is epidermis (epiblem(a)or rhizodermis. It is just one thick layer of cells which protects roots.
NCERT 90
Anatomy of Flowering Plants
271235
The vascular bundles in roots are always
1 Cojoint
2 Collateral
3 Radial
4 None of these
Explanation:
(c)The vascular bundles in roots are always radially as there is presence of xylem and phloem tissues on different radii.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Anatomy of Flowering Plants
271236
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
1 It is retained in the centre of the axis.
2 It gets crushed.
3 May or may not get crushed.
4 It gets surrounded by primary phloem.
Explanation:
(a)The fate of primary xylem in a dicot root showing extensive growth because it is retained in the centre of the axis.
NCERT 87
Anatomy of Flowering Plants
271237
Which of the following is not a characteristic feature of the anatomy of dicotyledonous root?
1 Radial vascular bundles
2 Secondary growth
3 Pith little or absent
4 Vascular bundles 15 – 20
Explanation:
(d)In dicots, vascular bundles are 15 to 20. These are open, exarch and take part in secondary growth in stem as well as roots.
NCERT 90–91
Anatomy of Flowering Plants
271233
These types of vascular bundles (A, B and C) are present in
1 A - Monocot leaf: B - Dicot stem: C - Monocot stem
2 A - Root: B - Dicot stem: C - Monocot stem
3 A - Root: B - Monocot stem: C - Dicot stem
4 A - Monocot root: B - Monocot leaf: C - Monocot stem
Explanation:
(c)The vascular bundles in roots are radially arranged i.e., the xylem and phloem are present on separate radica. Vascular bundle of monocot stem does not have cambium those are closed. The vascular bundles of dicot stem has cambium so they are referred to as open vascular bundles.
Anatomy of Flowering Plants
271234
Epiblema of roots is equivalent to
1 pericycle
2 endodermis
3 epidermis
4 stele
Explanation:
(c)The outer most (Piliferous)layer is epidermis (epiblem(a)or rhizodermis. It is just one thick layer of cells which protects roots.
NCERT 90
Anatomy of Flowering Plants
271235
The vascular bundles in roots are always
1 Cojoint
2 Collateral
3 Radial
4 None of these
Explanation:
(c)The vascular bundles in roots are always radially as there is presence of xylem and phloem tissues on different radii.
271236
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
1 It is retained in the centre of the axis.
2 It gets crushed.
3 May or may not get crushed.
4 It gets surrounded by primary phloem.
Explanation:
(a)The fate of primary xylem in a dicot root showing extensive growth because it is retained in the centre of the axis.
NCERT 87
Anatomy of Flowering Plants
271237
Which of the following is not a characteristic feature of the anatomy of dicotyledonous root?
1 Radial vascular bundles
2 Secondary growth
3 Pith little or absent
4 Vascular bundles 15 – 20
Explanation:
(d)In dicots, vascular bundles are 15 to 20. These are open, exarch and take part in secondary growth in stem as well as roots.
NCERT 90–91
Anatomy of Flowering Plants
271233
These types of vascular bundles (A, B and C) are present in
1 A - Monocot leaf: B - Dicot stem: C - Monocot stem
2 A - Root: B - Dicot stem: C - Monocot stem
3 A - Root: B - Monocot stem: C - Dicot stem
4 A - Monocot root: B - Monocot leaf: C - Monocot stem
Explanation:
(c)The vascular bundles in roots are radially arranged i.e., the xylem and phloem are present on separate radica. Vascular bundle of monocot stem does not have cambium those are closed. The vascular bundles of dicot stem has cambium so they are referred to as open vascular bundles.
Anatomy of Flowering Plants
271234
Epiblema of roots is equivalent to
1 pericycle
2 endodermis
3 epidermis
4 stele
Explanation:
(c)The outer most (Piliferous)layer is epidermis (epiblem(a)or rhizodermis. It is just one thick layer of cells which protects roots.
NCERT 90
Anatomy of Flowering Plants
271235
The vascular bundles in roots are always
1 Cojoint
2 Collateral
3 Radial
4 None of these
Explanation:
(c)The vascular bundles in roots are always radially as there is presence of xylem and phloem tissues on different radii.
