Question
Biology Question on Transport in Plants
Plants are killed in winter by frost because
A
no photosynthesis takes place at such low temperatures
B
of mechanical damage to the tissues
C
respiration ceases at such low temperatures
D
there is no transpiration
Answer
of mechanical damage to the tissues
Explanation
Solution
In frost covered plants, ice crystals form inside plant cells. These crystals cause expansion of cells. Cells can expand upto a certain limit, after which they got ruptured and plants ultimately are killed due to mechanical damage.