Yes, however, depending of level of kashrut observance, some fruits are avoided due to the difficulty in making sure there are no bugs/contaminants in the fruit. One of the best known examples of such a fruit are raspberries.
All fruit is kosher unless it is cut with non-kosher knives and/or they are mixed with non-kosher foods. Fruits that are processed in any way (canned, commercial juice, etc) but be certified kosher to confirm that nothing non-kosher has been added.
Yes, provided it doesn't contain and hasn't come in contact with non-kosher ingredients,
hasn't been processed or packaged on equipment that's also used for processing or
packaging non-kosher beverages, and doesn't go into containers previously used for
non-kosher beverages.
Yes. All plants are kosher unless and until prepared with non-kosher foods.
Yes.
Yes.
Yes.
There is no non-kosher fruit.
In any supermarket, look for canned fruit with a kosher certification on the label.
Not all of them are kosher. It will say on the box.
Kelloggs fruit snacks
Yes, there are no restrictions on fruit for Passover.
Certainly.
Usually, provided that it contains nothing but fruit and sugar. If it contains grape juice, carmine, or gelatin it's probably not kosher.
Grapes, as a fruit, are kosher. However, grape products have additional rules specific to grapes due to the religious significance of the fruit.
Yes, as plantains are a fruit.
Yes.
Gefen Lemon Time Liebers Mishpacha Realemon
No. They contain pork-based gelatin. Although you might want to email them directly and ask about which products are or are not Kosher.