Chlorosis in plant is caused by the deficiency of ……..
a) potassium
b) nitrogen
c) magnesium
d) both a and b
How much percentage of water is lost through stomata during transpiration?
a) 10
b) 20
c) 80
d) 90
Transport In Plants:
Which of the following are the vascular plants have specialized tissue, xylem and phloem?
a) bryophytes
b) tracheophytes
c) both a and b
d) none of these
Explanation: xylem conduct water and minerals and phloem conduct food
Xylem is made of…….types of cells.
a) two
b) three
c) four
d) five
Explanation: tracheids and vessels elements
What is the diameter of tracheid in xylem?
a) 20 µm
b) 60 µm
c) 40 µm
d) 80 µm
Explanation: these are with secondary lignified cell walls
