Climacteric fruit is the one which shows(1) Autochory(2) High respiratory activity at ripening(3) Sudden change in colour and taste at ripening(4) Both 2 and 3

Answer: (4)

The biochemical mechanism involved is that climatic fruits release significant amounts of ethylene gas and after-ripening process production of ethylene triggers.

Examples of climate fruits include apricots, banana, avocados, blackberries, kiwi, apple, peaches, pears, tomatoes.