Veggie Wash, the vegetable washing consumer product, claims to use "natural cleaners made from citrus, corn and coconut" and the web site states "it will not harm you if consumed" . Whether you would want to consume it or not is another question. My guess is it tastes bad. An all natural Veggie cleanser is a little Apple Cider Vinegar in plain Water. Note: this tastes bad too.
potato
It is but it will taste different.
tomatoes
Non veg. it is made from milk by coagulation . As a vegetable, the edible heads of a cauliflower
Garlic is considered a vegetable because it is a plant that is grown for its edible parts, which are the bulbs.
Seeds.
No, cabbage is not classified as a root vegetable. The edible part grows above the ground. Although cabbage has roots, they are not the edible part. Such things as carrot and potato (where the edible parts grow under the ground) are classified as "root" vegetables.
A vegetable by definition, is an edible plant with seeds.
The root it is a root vegetable
Yes it is. "The vegetable, or cellulose-base, class includes such important fibers as cotton, flax, and jute." Encyclopedia Britannica
The avocado was called the "edible stone" by the Spanish due to its large seed in the middle of the fruit.
I believe it is. Happy to get this information