As with regular sight, colour blindness may become more of a problem with age. I'm not sure what you mean by not 100%.. Colour blindness does have varying effects, like green may look exactly like red or orange is blue, but it isn't usually a matter of them seeing things in black and white. only know that of him and his brother, his colour blindness is worse. No, colour deficiency as it is called these days does not become worse with age. If he has good vision, he will not be totally colour blind (these people are usually registered blind).
The exact definition of a vegetable may vary simply because of the many parts of a plant consumed as food worldwide â roots, tubers, bulbs, corms, stems, leaf stems, leaf sheaths, leaves, buds, flowers, fruits and seeds.
Vegetables come from many different parts of the plant, including the leaves, roots, tubers, flowers, stems, seeds and shoots. Legumes are the seeds of the plant and are eaten in their immature form as green peas and beans, and the mature form as dried peas, beans, lentils and chickpeas. Vegetables can be broken up into different groups, with each group providing their own unique nutrients. The main sub-groups for vegetables are: Dark green or cruciferous/brassica. 1  Broccoli, brussels sprouts, bok choy, cabbages, cauliflower, kale. 2  Lettuce, silverbeet, spinach, snow peas.