71. Companion cell regulates the activities of -
Match coloumn I and coloumn II
Organs vascular bundle
(p)Maize stem (1)Bicollateral and open
(q)Cucurbita stem (2)Radidal
(r)Sunflower stem (3)Conjoint and closed
(s)Maize root (4)Conjoint and open
A. (p-1) (q-4) (r-3) (s-2)
B. (p-2) (q-3) (r-1) (s-4)
C. (p-3) (q-1) (r-4) (s-2)
D. (p-3) (q-4) (r-2) (s-1)
Answer : Option C
73. Phelloderm is formed of
A. Phellem + phellogen
B. Periderm + phellogen
C. Phellem + periderm
D. Periderm-phellogen and phellem
Answer : Option D
74. The tissue in roots which acts as check dam against water is-
75. Companion cell is-
76. Which one of the following is an internal secretory structure ?
77. In roots the lateral root originates from-
78. What is produced from periblem ?
Match column I with column II
Tissue Function
(1) PArenchyma (a) Increase in length of plants
(2) Lateral meristem (b) Increase in nodal region
(3) Apical meristem (c) support,protection,storage
(4) Intercalary meristem (d) Increase in diametre of trunk
A. (1-d) (2-c) (3-b) (4-a)
B. (1-c) (2-d) (3-a) (4-b)
C. (1-a) (2-b) (3-d) (4-c)
D. (1-c) (2-a) (3-d) (4-b)
Answer : Option B
Tissue Deposition
(a) Trachaea (1) callose
(b) parenchyma (2) pectin
(c) sieve cell (3) lignin
(d) collenchyma (4) cellulose
A. (a-1) (b-2) (c-3) (d-4)
B. (a-3) (b-1) (c-4) (d-2)
C. (a-3) (b-4) (c-1) (d-2)
D. (a-2) (b-3) (c-1) (d-2)
Answer : Option D