|:- Fill in the blanks.
Sieve tubes are the main conducting elements in the ( i )__________. These are ( ii )_________, cylindrical, ( iii )________ walled cells arranged in vertical rows. The end wall of each sieve tube is ( iv )________ i.e., it has fine pores, like those in a sieve. The perforated end walls are therefore termed ( v )_______. The pores or perforations are called ( vi )________. Food materials can easily pass through sieve areas. At maturity, sieve tubes lack the ( vii )________. Yet, the sieve tubes remain living, dependent on the adjacent ( viii )________ cell.
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I) angiosperms
ii) long / hollow
iii) thin
iv) thick / tapered
v) sieve area
vi) sieve plates
vii) nucleus
viii) nucleus-containing companion cells
Answered by
3
I) angiosperms
ii) long / hollow
iii) thin
iv) thick / tapered
v) sieve area
vi) sieve plates
vii) nucleus
viii) nucleus-containing companion cells
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