1 These are parenchyma cells with thickened lignified walls.
2 These are elongated and flexible with tapered ends.
3 These are commonly found in the shells of nuts and in the pulp of guava, pear, etc.
4 These are also called stone cells.
Explanation:
(a) Sclereids (stone cells) are sclerenchymatous cells which are lignified, extremely thick walled so that the lumen of the cells is almost obliterated. Sclereids are most abundant in soft tissues like cortex, phloem, medulla, fleshy fruits, seed coats and fruit walls.
Anatomy of Flowering Plants(NCERT)
286601
Lignin is the important constituent in the cell wall of
1 phloem
2 parenchyma
3 xylem
4 cambium
Explanation:
(c) Lignin is the important constituent in the cell wall of xylem. Xylem consists of four different types of elements- tracheids, vessels, and xylem parenchyma and xylem fibres. Wall of tracheids are highly thickened by the deposition of lignin, except at certain points called as pits.
Anatomy of Flowering Plants(NCERT)
286602
Meristematic tissue responsible for increase in girth of tree trunk is
1 Apical meristem
2 Intercalary meristem
3 Lateral meristem
4 Phellogen
Explanation:
(c)
Anatomy of Flowering Plants(NCERT)
286603
Sieve tubes are suited for translocation of food because they possess
1 These are parenchyma cells with thickened lignified walls.
2 These are elongated and flexible with tapered ends.
3 These are commonly found in the shells of nuts and in the pulp of guava, pear, etc.
4 These are also called stone cells.
Explanation:
(a) Sclereids (stone cells) are sclerenchymatous cells which are lignified, extremely thick walled so that the lumen of the cells is almost obliterated. Sclereids are most abundant in soft tissues like cortex, phloem, medulla, fleshy fruits, seed coats and fruit walls.
Anatomy of Flowering Plants(NCERT)
286601
Lignin is the important constituent in the cell wall of
1 phloem
2 parenchyma
3 xylem
4 cambium
Explanation:
(c) Lignin is the important constituent in the cell wall of xylem. Xylem consists of four different types of elements- tracheids, vessels, and xylem parenchyma and xylem fibres. Wall of tracheids are highly thickened by the deposition of lignin, except at certain points called as pits.
Anatomy of Flowering Plants(NCERT)
286602
Meristematic tissue responsible for increase in girth of tree trunk is
1 Apical meristem
2 Intercalary meristem
3 Lateral meristem
4 Phellogen
Explanation:
(c)
Anatomy of Flowering Plants(NCERT)
286603
Sieve tubes are suited for translocation of food because they possess
1 These are parenchyma cells with thickened lignified walls.
2 These are elongated and flexible with tapered ends.
3 These are commonly found in the shells of nuts and in the pulp of guava, pear, etc.
4 These are also called stone cells.
Explanation:
(a) Sclereids (stone cells) are sclerenchymatous cells which are lignified, extremely thick walled so that the lumen of the cells is almost obliterated. Sclereids are most abundant in soft tissues like cortex, phloem, medulla, fleshy fruits, seed coats and fruit walls.
Anatomy of Flowering Plants(NCERT)
286601
Lignin is the important constituent in the cell wall of
1 phloem
2 parenchyma
3 xylem
4 cambium
Explanation:
(c) Lignin is the important constituent in the cell wall of xylem. Xylem consists of four different types of elements- tracheids, vessels, and xylem parenchyma and xylem fibres. Wall of tracheids are highly thickened by the deposition of lignin, except at certain points called as pits.
Anatomy of Flowering Plants(NCERT)
286602
Meristematic tissue responsible for increase in girth of tree trunk is
1 Apical meristem
2 Intercalary meristem
3 Lateral meristem
4 Phellogen
Explanation:
(c)
Anatomy of Flowering Plants(NCERT)
286603
Sieve tubes are suited for translocation of food because they possess
1 These are parenchyma cells with thickened lignified walls.
2 These are elongated and flexible with tapered ends.
3 These are commonly found in the shells of nuts and in the pulp of guava, pear, etc.
4 These are also called stone cells.
Explanation:
(a) Sclereids (stone cells) are sclerenchymatous cells which are lignified, extremely thick walled so that the lumen of the cells is almost obliterated. Sclereids are most abundant in soft tissues like cortex, phloem, medulla, fleshy fruits, seed coats and fruit walls.
Anatomy of Flowering Plants(NCERT)
286601
Lignin is the important constituent in the cell wall of
1 phloem
2 parenchyma
3 xylem
4 cambium
Explanation:
(c) Lignin is the important constituent in the cell wall of xylem. Xylem consists of four different types of elements- tracheids, vessels, and xylem parenchyma and xylem fibres. Wall of tracheids are highly thickened by the deposition of lignin, except at certain points called as pits.
Anatomy of Flowering Plants(NCERT)
286602
Meristematic tissue responsible for increase in girth of tree trunk is
1 Apical meristem
2 Intercalary meristem
3 Lateral meristem
4 Phellogen
Explanation:
(c)
Anatomy of Flowering Plants(NCERT)
286603
Sieve tubes are suited for translocation of food because they possess
