General Knowledge - Biology - Discussion
Discussion Forum : Biology - Section 1 (Q.No. 66)
66.
Plants are killed in winter by frost
Discussion:
7 comments Page 1 of 1.
Ramavatar said:
1 decade ago
Please write corret answers, please.
Smat said:
1 decade ago
Generally at low temperature enzymatic activity ceases, so enzyme related with respiration will not be able catabolise the respiration reaction. Therefore respiration get ceases and plat get killed. C. Is correct option.
Dipti said:
1 decade ago
How comes mechanical damage to the tissue in winter please explain?
GURMEET said:
1 decade ago
Low temp. Cause damage either directly by freezing cellular water or indirectly by freezing soil water, making it enable to uptake water. Mechanical damage occur due to weight of frozen water i.e. snow. So A is the correct answer. To know more read ABIOTIC WINTER DAMAGE.
Husain raza said:
9 years ago
Option B is correct because no photosynthesis takes place at such low temperature.
Amit Chandela said:
8 years ago
I too think B is correct option.
Keerthana M Lal said:
8 years ago
During winter water freezes.
When water freezes it expands, i.e, the volume of ice is greater than that of water. So, the water inside the cell expands and as a result the cell membrane gets broken.
When water freezes it expands, i.e, the volume of ice is greater than that of water. So, the water inside the cell expands and as a result the cell membrane gets broken.
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