Diatomaceous earth, used in filtration and polishing, is formed from the cell walls of: MCQ with Answer and Explanation

Explanation:
Cone cells in the retina detect color (photopic vision). Rods are for dim light (scotopic) vision. The fovea has high cone density.

Explanation:
Adiponectin is an abundant protein hormone secreted by adipose tissue. Uniquely, its plasma levels are inversely correlated with body fat percentage; obese individuals have lower levels. Its primary functions are highly beneficial for metabolic health: it enhances insulin sensitivity in the liver and muscles, promotes the oxidation of fatty acids (reducing fat accumulation), inhibits glucose production by the liver, and has potent anti-inflammatory and anti-atherogenic effects on the blood vessels. Low levels of adiponectin are associated with insulin resistance, type 2 diabetes, and cardiovascular disease.

Explanation:
Sericulture involves the cultivation of mulberry plants (Morus alba) and rearing of the silkworm Bombyx mori to produce raw silk. Apiculture is beekeeping, pisciculture is fish farming, vermiculture is earthworm rearing for compost. India is the second-largest producer of silk after China, producing mulberry, tasar, eri, and muga silk.