Question

Climacteric fruit is the one which shows
A. Autochory
B. High respiratory activity at ripening
C. Sudden change in colour and taste at ripening
D. Both A and B

Answer 1

Climacteric fruits are the fruits that can ripen after being harvested and these fruits are harvested at premature stage so that they can be transported to distant markets. These fruits keep on ripening even after their packaging due to special characteristics in them.

Complete answer:
Climacteric fruits have special characteristics that help them ripe even after harvesting. The ripening of these fruits even after harvesting is due to the large amount of ethylene produced in them along with high respiratory activity. Some fruits like apples, bananas, etc produce more ethylene hormone as compared to other climacteric fruits, whereas non-climacteric fruits are those which do not produce ethylene hormone in then and stop the harvesting after their harvesting. Climacteric fruits do not require remaining on the tree for their ripening. Citrus grapes are the examples of the non-climacteric fruits and ripe without ethylene.
Autochory is the process of dispersal of seeds and fruits because of any kind of natural physical explosion. This is a technique of self-dispersal of seeds which helps them in the process of seed dispersal on their own.

Hence, the correct option is B. High respiratory activity at ripening.

Note: Artificial dose of ethylene is also injected in plants in order to facilitate ripening of fruits rapidly. In order to produce fruits commercially, the fruits are injected with ripening which helps in saving the duration of fruit ripening which help to fetch high profits in a short period of time.