Use this scenario to answer the question.

The correct response is:

**The polyvinyl wrap probably caused the browning since it traps ethylene gas which would speed up the ripening process.**

This is because polyvinyl wrap can trap ethylene gas released by fruits, which accelerates the ripening process and can lead to browning in fruits like bananas. Polyethylene wrap, on the other hand, is less effective at trapping ethylene and is often used to help delay ripening.

Which statement is true?(1 point)

Responses

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

Abscisic acid regulates dormancy in plants by activating plant growth during cold weather.
Abscisic acid regulates dormancy in plants by activating plant growth during cold weather.

Abscisic acid regulates water loss in plants by making plants close their stomata during cold weather.
Abscisic acid regulates water loss in plants by making plants close their stomata during cold weather.

Abscisic acid regulates dormancy in plants by suspending plant growth during hot weather.

The true statement is:

**Abscisic acid regulates water loss in plants by making plants close their stomata during hot weather.**

Abscisic acid (ABA) is a plant hormone that plays a crucial role in regulating water loss, particularly during stressful conditions such as drought or high temperatures. It signals the closure of stomata, which helps to reduce water loss through transpiration.

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?

(1 point)
Responses

the age of the bananas
the age of the bananas

the color of the bananas
the color of the bananas

the length of ripening time
the length of ripening time

the concentrations of ethylene spray

The independent variable of this investigation would be:

**the concentrations of ethylene spray.**

The independent variable is what you manipulate in an experiment to observe its effect on the dependent variable, which in this case would be the ripening of the bananas.

How does auxin affect the growth of plant stems?(1 point)

Responses

It builds up on the side of the stem that is away from the light source and stimulates growth.
It builds up on the side of the stem that is away from the light source and stimulates growth.

It builds on the side of the stem that faces the light source and stimulates growth.
It builds on the side of the stem that faces the light source and stimulates growth.

It builds up on the side of the stem that faces the light source and inhibits growth.
It builds up on the side of the stem that faces the light source and inhibits growth.

It builds up on the side of the stem that is away from the light source and inhibits growth.

The correct response is:

**It builds up on the side of the stem that is away from the light source and stimulates growth.**

Auxin is a plant hormone that promotes cell elongation. When light is detected, auxin redistributes itself to the shaded side of the plant, causing the cells on that side to elongate more than those on the side facing the light. This differential growth causes the plant to bend towards the light source, a phenomenon known as phototropism.

From the drop down pick the correction definition for negative phototropism and positive phototropism.(1 point)

Negative phototropism is
. Positive phototropism is
.

Negative phototropism is **the growth of a plant away from light.** Positive phototropism is **the growth of a plant toward light.**