Who recognised first the presence of casparian strips
Doffins in $1885$
Caspary in $1865$
Hofmeister in $1895$
Bailey in $1975$
Trees at sea do not have annual rings because
Quiescent centre is found in
For a successful graft, the adhesion between stock and scion is a must. Which one of the following is the earliest event towards a good graft
In old sieve tubes at the end of growing season, which of the following gets deposited over sieve plate to regulate sugar transport?