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.
The other parts of plants are considered vegetables. These include the stems, leaves and roots â and even the flower bud. The following are technically fruits: avocado, beans, peapods, corn kernels, cucumbers, grains, nuts, olives peppers, pumpkin, squash, sunflower seeds and tomatoes. Vegetables include celery (stem), lettuce (leaves), cauliflower and broccoli (buds), and beets, carrots and potatoes (roots). From a culinary standpoint, vegetables are less sweet â or more savory â and served as part of the main dish. Fruits are more sweet and tart and are most often served as a dessert or snack.