Which of the following statements about the food web is correct? MCQ with Answer and Explanation

Explanation:
Vitamin E (tocopherol) is a fat-soluble antioxidant that protects cell membranes from oxidative damage by free radicals. Vitamin K is partially synthesized by the symbiotic bacteria residing in the human intestine, contributing to the body's supply. Vitamin C (ascorbic acid) is a crucial cofactor for the enzymes prolyl and lysyl hydroxylase, essential for the synthesis and stabilization of collagen. All statements are correct.

Explanation:
Genetic drift is the random fluctuation of allele frequencies in a population, particularly significant in small populations, due to chance events. Gene flow (migration) is the transfer of alleles from one population to another through the movement of individuals or gametes. Natural selection is a non-random, deterministic process where individuals with traits better suited to their environment have higher survival and reproductive success. Thus, statements 1 and 2 are correct.

Explanation:
Vernalization is the process by which many plants, particularly biennials and winter annuals (like winter wheat, cabbage, and carrots), require exposure to a prolonged period of low temperature (cold treatment) before they can initiate flowering. This prevents the plant from flowering in the autumn, ensuring it survives the winter and flowers in the spring or summer. The cold stimulus is perceived by the apical meristem or the germinating seed.