286621
The length of different internodes in a culm of sugarcane is variable because of
1 size of leaf lamina at the node below each internode
2 intercalary meristem
3 shoot apical meristem
4 position of axillary buds
Explanation:
(b) Intercalary meristem occurs between mature tissues and is the separated region of apical meristem. It is found in between the plant organs. By the activity of this meristem, length of the plant organs increases.
Anatomy of Flowering Plants(NCERT)
286622
Identify $A,B$ and $C$ in the given figure of shoot apical meristem
1 A - Leaf primordium, B - Shoot apical meristem, C - Axillary bud
2 A - Leaf primordium, B - Shoot apical meristem, C - Apical bud
3 A - Root hair primordium, B - Root apical meristem, C - Axillary bud
4 A - Root hair primordium, B - Root apical meristem, $\text{C}$ - Terminal bud
Explanation:
(a) In the given figure of shoot apical meristem, the parts marked as A, B and C are respectively leaf primordium; shoot apical meristem and axillary bud (present in the axils of leaf and are capable of forming a branch or a flower). The shoot apical meristem is a population of cells located at the tip of the shoot axis. It produces lateral organs, stems tissues and regenerates itself.
Anatomy of Flowering Plants(NCERT)
286623
All the following statements regarding sieve tube elements are correct except that
1 their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 they possess peripheral cytoplasm as well as a large vacuole.
3 distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen.
4 long, slender, tube-like structures arranged in longitudinal series.
Explanation:
(a) The end walls of sieve tube elements are perforated in a sieve like manner to form the sieve plates. A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus.
Anatomy of Flowering Plants(NCERT)
286625
Which of the following group of cells make up the Conjuctive tissue?
1 Parenchymatous cells lying between xylem and phloem.
2 Cells present between tight and gap junctions
3 Cells of conjoint type of vascular bundles
4 Meristematic cells present between two nodes
Explanation:
(a) Conjuctive tissue- Parenchymatous cells lying between xylem and phloem.
286621
The length of different internodes in a culm of sugarcane is variable because of
1 size of leaf lamina at the node below each internode
2 intercalary meristem
3 shoot apical meristem
4 position of axillary buds
Explanation:
(b) Intercalary meristem occurs between mature tissues and is the separated region of apical meristem. It is found in between the plant organs. By the activity of this meristem, length of the plant organs increases.
Anatomy of Flowering Plants(NCERT)
286622
Identify $A,B$ and $C$ in the given figure of shoot apical meristem
1 A - Leaf primordium, B - Shoot apical meristem, C - Axillary bud
2 A - Leaf primordium, B - Shoot apical meristem, C - Apical bud
3 A - Root hair primordium, B - Root apical meristem, C - Axillary bud
4 A - Root hair primordium, B - Root apical meristem, $\text{C}$ - Terminal bud
Explanation:
(a) In the given figure of shoot apical meristem, the parts marked as A, B and C are respectively leaf primordium; shoot apical meristem and axillary bud (present in the axils of leaf and are capable of forming a branch or a flower). The shoot apical meristem is a population of cells located at the tip of the shoot axis. It produces lateral organs, stems tissues and regenerates itself.
Anatomy of Flowering Plants(NCERT)
286623
All the following statements regarding sieve tube elements are correct except that
1 their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 they possess peripheral cytoplasm as well as a large vacuole.
3 distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen.
4 long, slender, tube-like structures arranged in longitudinal series.
Explanation:
(a) The end walls of sieve tube elements are perforated in a sieve like manner to form the sieve plates. A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus.
Anatomy of Flowering Plants(NCERT)
286625
Which of the following group of cells make up the Conjuctive tissue?
1 Parenchymatous cells lying between xylem and phloem.
2 Cells present between tight and gap junctions
3 Cells of conjoint type of vascular bundles
4 Meristematic cells present between two nodes
Explanation:
(a) Conjuctive tissue- Parenchymatous cells lying between xylem and phloem.
286621
The length of different internodes in a culm of sugarcane is variable because of
1 size of leaf lamina at the node below each internode
2 intercalary meristem
3 shoot apical meristem
4 position of axillary buds
Explanation:
(b) Intercalary meristem occurs between mature tissues and is the separated region of apical meristem. It is found in between the plant organs. By the activity of this meristem, length of the plant organs increases.
Anatomy of Flowering Plants(NCERT)
286622
Identify $A,B$ and $C$ in the given figure of shoot apical meristem
1 A - Leaf primordium, B - Shoot apical meristem, C - Axillary bud
2 A - Leaf primordium, B - Shoot apical meristem, C - Apical bud
3 A - Root hair primordium, B - Root apical meristem, C - Axillary bud
4 A - Root hair primordium, B - Root apical meristem, $\text{C}$ - Terminal bud
Explanation:
(a) In the given figure of shoot apical meristem, the parts marked as A, B and C are respectively leaf primordium; shoot apical meristem and axillary bud (present in the axils of leaf and are capable of forming a branch or a flower). The shoot apical meristem is a population of cells located at the tip of the shoot axis. It produces lateral organs, stems tissues and regenerates itself.
Anatomy of Flowering Plants(NCERT)
286623
All the following statements regarding sieve tube elements are correct except that
1 their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 they possess peripheral cytoplasm as well as a large vacuole.
3 distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen.
4 long, slender, tube-like structures arranged in longitudinal series.
Explanation:
(a) The end walls of sieve tube elements are perforated in a sieve like manner to form the sieve plates. A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus.
Anatomy of Flowering Plants(NCERT)
286625
Which of the following group of cells make up the Conjuctive tissue?
1 Parenchymatous cells lying between xylem and phloem.
2 Cells present between tight and gap junctions
3 Cells of conjoint type of vascular bundles
4 Meristematic cells present between two nodes
Explanation:
(a) Conjuctive tissue- Parenchymatous cells lying between xylem and phloem.
286621
The length of different internodes in a culm of sugarcane is variable because of
1 size of leaf lamina at the node below each internode
2 intercalary meristem
3 shoot apical meristem
4 position of axillary buds
Explanation:
(b) Intercalary meristem occurs between mature tissues and is the separated region of apical meristem. It is found in between the plant organs. By the activity of this meristem, length of the plant organs increases.
Anatomy of Flowering Plants(NCERT)
286622
Identify $A,B$ and $C$ in the given figure of shoot apical meristem
1 A - Leaf primordium, B - Shoot apical meristem, C - Axillary bud
2 A - Leaf primordium, B - Shoot apical meristem, C - Apical bud
3 A - Root hair primordium, B - Root apical meristem, C - Axillary bud
4 A - Root hair primordium, B - Root apical meristem, $\text{C}$ - Terminal bud
Explanation:
(a) In the given figure of shoot apical meristem, the parts marked as A, B and C are respectively leaf primordium; shoot apical meristem and axillary bud (present in the axils of leaf and are capable of forming a branch or a flower). The shoot apical meristem is a population of cells located at the tip of the shoot axis. It produces lateral organs, stems tissues and regenerates itself.
Anatomy of Flowering Plants(NCERT)
286623
All the following statements regarding sieve tube elements are correct except that
1 their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 they possess peripheral cytoplasm as well as a large vacuole.
3 distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen.
4 long, slender, tube-like structures arranged in longitudinal series.
Explanation:
(a) The end walls of sieve tube elements are perforated in a sieve like manner to form the sieve plates. A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus.
Anatomy of Flowering Plants(NCERT)
286625
Which of the following group of cells make up the Conjuctive tissue?
1 Parenchymatous cells lying between xylem and phloem.
2 Cells present between tight and gap junctions
3 Cells of conjoint type of vascular bundles
4 Meristematic cells present between two nodes
Explanation:
(a) Conjuctive tissue- Parenchymatous cells lying between xylem and phloem.
