Question

vocabulary activity questions
1 according to the text, what is one molecule that is responsible for fruit ripening?
a caffeine
b ethylene
c chlorine
d nitrogen
bananas before they are harvested and ripe
biting into a ripe, juicy fruit brings a smile to many peoples faces. but eating that same fruit a week before it is ripe probably wouldnt be as enjoyable! unripe fruits are often hard and bitter, but that serves a purpose. the hard exterior of an unripe fruit protects the developing seed inside. after a seed fully develops inside the fruit, the fruit changes color, softens, and gets sweeter to become more attractive to animals and humans. these organisms eat the fruit and spread its seeds, ensuring the plants survival and regrowth.
but how does a fruit ripen? the ripening process involves many complex chemical reactions. when a fruit ripens, it goes through a

Explanation:

Ethylene is a plant - hormone that plays a key role in fruit ripening. Caffeine is a stimulant found in coffee, tea etc. Chlorine is a chemical element used in water purification etc. Nitrogen is a major component of the air we breathe and is important for plant growth but not for fruit - ripening.

Answer:

B. ethylene