|:- 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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25
I) angiosperms
ii) long
iii) thin
iv) thick
v) sieve area
vi) sieve plates
vii) nucleus
viii) nucleus-containing companion cells
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Answered by
5
( i )
( ii )
( iii )
( iv )
( v )
( vi )
( vii )
( viii )
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