Question
Biology Question on Cell: the unit of life
Continuity of cytoplasm from cell to cell is maintained through
A
pit canals present in primary walls
B
plasmodesmata
C
plasmalemma
D
middle lamella.
Answer
plasmodesmata
Explanation
Solution
Plasmodesrnata (singular- plasmodesma; Tangl, 1879; Strasburger, 1901) are cytoplasmic bridges between adjacent plant cells which develop in the minute pores of their walls. They form a protoplasmic continuum called symplast. Cell wall and intercellular spaces form a non-living component of the plant body called apoplast. A plasmodesma is 40-50 nm i diameter. It may be simple or branched.