Use this scenario to answer the question.
After eating half of a banana as a snack, you decide to save the rest for later. There are two types of plastic wrap in your
house, and you use one to cover the banana. In an hour, you return and find that your banana half has browned
significantly despite being saved in plastic wrap. You discover that one of the plastic wraps is made of polyvinyl, and the
other is made of polyethylene.
Which plastic wrap could have caused this browning effect, and why?

After eating half of a banana as a snack, you decide to save the rest for later. There are two types of plastic wrap in your house, and you use one to cover the banana. In an hour, you return and find that your banana half has browned significantly despite being saved in plastic wrap. You discover that one of the plastic wraps is made of polyvinyl, and the other is made of polyethylene.

Which plastic wrap could have caused this browning effect, and why?

(answer: The polyethylene wrap probably caused the browning since it contains ethylene which would speed up the ripening process.)

Which statement is true?

(answer: Abscisic acid regulates water loss in plants by making plants close their stomata during hot weather.)

Use the scenario to answer the question.

You investigate the effect of different concentrations of ethylene spray on ripening in bananas.

What would be the independent variable of this investigation?

(answer: the concentrations of ethylene spray)

Which statement is true?

In stems, auxin accumulation will occur on the side that is near the light source, and cell elongation will occur on the opposite side.

(answer: In stems, auxin accumulation and cell elongation will occur on the side that is away from the light source._

If a plant is grown in the absence of gravity, which type of phototropism will its roots exhibit, and where will auxin accumulate?

(answer:negative phototropism; auxin will accumulate on the side away from the light source

Batolisisgo Batolisisgo · Answer 2

The correct answer from the options is ; The polyethylene wrap probably caused the browning since it contains ethylene which would speed up the ripening process. ( A )

The polyethylene wrap contains a ethylene which is a phytohormone that regulates the growth and senescence in plants. when ethylene is released rapidly it speeds up the ripening of fruits after they are harvested. as seen in most plants.

Therefore wrapping a harvested fruit with a polyethylene wrap causes the rapid release of ethylene on the fruit which speeds up the senescence.

Hence we can conclude that the polyethylene wrap probably caused the browning since it contains ethylene which would speed up the ripening process.

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