The pigment that is present in the fovea centralis of the retina for high acuity color vision is: MCQ with Answer and Explanation

Explanation:
Pellagra (niacin deficiency) presents with the three D's: dermatitis, diarrhea, and dementia. Bleeding gums is scurvy (vitamin C), bone deformities rickets (vitamin D), night blindness vitamin A deficiency.

Explanation:
Invertase (sucrase) hydrolyzes sucrose into its constituent monosaccharides, glucose and fructose. Maltase acts on maltose, lactase on lactose, amylase on starch. Invertase is found in the intestinal brush border and is also produced by yeast. The resulting mixture is called invert sugar, sweeter than sucrose.

Explanation:
The Chipko movement (1970s, Uttarakhand) involved hugging trees to prevent them from being felled, promoting forest conservation.