Plant Hormones 2

Question 1

How is weed B Gon used?

Answer 1

It may be used by people with lawns who want their grass but not the weeds. It can also be used by farmers who grow primarily monocots.

Question 2

What type of plants does Weed B Gon target, and what types does ti allow to grow?

Answer 2

They target broadleaf weeds, which are eudicots. It should be less effective towards monocots, and allow them to grow.

Question 3

What are the three active ingredients in Weed B Gon?

Answer 3

Dimethylamine Salt of 2,4-D Acid (8.658%)
Dimethylamine Salt of Mercoprop-p Acid (2.127%)
Dicamba Acid (0.371%)

Question 4

How does the Weed B Gon ingredients affect unwanted plants?

Answer 4

Mimics auxins and causes the weeds and unwanted plants to grow too quickly and die

Question 5

How does the Weed B gon affect other plants users do want to grow?

Answer 5

It should not affect it, and may actually promote the growth of non-broadleaf plants

Question 6

What plant hormones does Weed B Gon affect? Why?

Answer 6

they mimic or are analogous to auxins

they stimulate growth and become toxic in high concentrations

Question 7

How does Weed B gon affect planted seeds?

Answer 7

Weed B Gon may inhibit the growth of the cowpeas compared to the corn, as auxins are more toxic to eudicots compared to monocots

Question 8

How is atrazine used? Who might use it, and in what setting?

Answer 8

Atrazine is used to control broadleaf and grassy weeds. The product is used in maintaining the growth of crops such as corn and sugarcane, and can be used on lawns.

Question 9

What type of herbicide is Atrazine known as?

Answer 9

Chlorotriazine herbicide

Question 10

What type of plant does atrazine target, and what does it allow to grow?

Answer 10

Target: broadleaf and grassy weeds before and after they sprout

Allows for growth: Corn, sorghum, and sugarcane

Question 11

What are the active ingredient in atrazine?

Answer 11

Atrazine and other related compound

Question 12

How does atrazine affect unwanted plants?

Answer 12

It interferes with photosynthesis in broadleaf plants and grasses.

Question 13

How does atrazine affect plants users do want to grow?

Answer 13

It selectively controls annual grasses and broadleaf weeds before they emerge.

Question 14

What plant hormones does atrazine affect?

Answer 14

Auxins, gibberellins, and cytokinins

Question 15

How does atrazine interact with planted seeds?

Answer 15

Atrazine may inhibit the growth of the cowpeas compared to the corn, as auxins are more toxic to eudicots compared to monocots

Question 16

What is a null hypothesis for your experiment?

Answer 16

There will be no difference in the effect of either herbicide on both cowpeas and corn

Question 17

What is you alternative hypothesis, and why?

Answer 17

Atrazine will promote early germination and early plant growth in corn, whilst Weed B Gon will result in a slower germination and plant growth rate for both cowpeas and corn.

Atrazine influences gibberellins and cytokinins, which are plant hormones active during germination and early plant growth. Weed B Gon on the other hand only contains auxins, which are plant hormones that stimulate growth after germination. Corn will benefit from the herbicides since it is a monocot, and will not be affected by high concentrations of auxins compared to cowpeas which are eudicot.

Question 18

What is the outcome variable?

Answer 18

Germination and plant growth

Question 19

What is the predictor variable?

Answer 19

Herbicides used: Atrazine and Weed B Gon, and concentration

Question 20

What is the relationship between outcome and predictor variable?

Answer 20

Herbicides possess plant hormones that will influence germination and plant growth.

Question 21

What does it mean if you reject the null hypothesis, and accept the alternative hypothesis?

Answer 21

It means the outcomes favor the alternative hypothesis, and suggests that there is an effect of the variable within a sample.

Question 22

What does it mean if you accept the null hypothesis, and reject the alternative hypothesis?

Answer 22

This means the experiment did not provide enough evidence to verify whether an effect exists, or there is no effect existing within the experiment