The interlocking pattern of various food chains is referred as Food _______.
Correct option is A. Web
In nature, food chains do not operate in isolation. These, in fact, are interconnected forming a sort of interlocking pattern.
Food web is a network of food chains which become inter- connected at various trophic levels so as to form a number of feeding connections amongst different organisms of a biotic community.
So, the correct answer is 'Food web'.