A) proteins
B) glycoproteins
C) phenolic compounds
D) lipids
Correct Answer: C
Solution :
The pre in fectional biochemical defence mechanism includes the presence of certain chemicals, such as phenols and chlorogenic acid. Red variety of onion shows resistance toward Colletotrichum circimans. The scaly leaves of this variety contain certain phenolic compounds like protocatechuic acid and catcehol which inhibit spore germination of the fungus.
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