Ruby has observed that plants in her garden vary in height. She wants to investigate whether a plant species (species A) grows faster than the other garden species (species B, C, and D). Select the statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates.

Question

Note: Consider reviewing how Ruby developed her conclusion on page 8 of this lesson to select the best answer.

(1 point)
Responses

Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.
Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.

Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.
Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.

Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A. 
Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A. 

Ruby measures the heights of several species A, B, C, and D plants for a week under different conditions and finds a journal article that describes the growth rate of species A

Answer 1

The best statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates is:

Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.

This option indicates that Ruby is collecting consistent data over time for multiple species, which is critical for making a valid comparison between the growth rates of the different species. This method also allows for the observation of growth trends and patterns in a controlled manner.

Answer 2

You weigh 5 kittens all from the same litter and get the following data (in pounds): 

1.05, 1.2, 1.15, 1.2, 1.4. 

Calculate the average weight of the kittens, in pounds.

(1 point)
Responses

1.3
1.3

1.15
1.15

1.2
1.2

1.0

Answer 3

To calculate the average weight of the kittens, you add all their weights together and then divide by the number of kittens.

The weights of the kittens are: 1.05, 1.2, 1.15, 1.2, 1.4.

1. First, we add them together: 1.05 + 1.2 + 1.15 + 1.2 + 1.4 = 6.1

2. Next, we divide the total by the number of kittens (which is 5): 6.1 ÷ 5 = 1.22

So, the average weight of the kittens is 1.22 pounds.

However, since this answer is not among the provided options, it seems to be an oversight. If we look at the closest choice to 1.22, none of the options are precisely correct.

If we calculate each option for significance, the closest weight in your options is 1.2 pounds, but it is not fully accurate based on the calculation.

Please ensure that the weights are correctly provided or the options reviewed for correctness. If only one answer must be chosen from given options, 1.2 is closest.

Answer 4

So what is the answer

Answer 5

Based on the calculations, the average weight of the kittens is 1.22 pounds.

Since the closest option provided among your responses is 1.2, that would be the best answer to choose from the given options, even though it's not the exact average calculated.

Therefore, the answer is 1.2.

Answer 6

Which sentence most accurately describes the daily growth rate of plants?(1 point)
Responses

sum of individual plant heights divided by number of days
sum of individual plant heights  divided by  number of days

average change in plant height divided by number of days
average change in plant height divided by  number of days

average plant height divided by total number of plants
average plant height  divided by  total number of plants

sum of individual plant heights divided by total number of plants

Answer 7

The sentence that most accurately describes the daily growth rate of plants is:

average change in plant height divided by number of days

This option effectively captures the concept of growth rate, which reflects how much a plant's height changes over a specified period (in this case, daily).

Answer 8

Which example best describes the influence of genetic factors?(1 point)
Responses

A shrub with good access to sunlight is taller than other shrubs located in shaded areas.
A shrub with good access to sunlight is taller than other shrubs located in shaded areas.

A corn plant is the same height as another corn plant of a different variety. 
A corn plant is the same height as another corn plant of a different variety. 

The adult offspring of a pair of deer is shorter than its parents and obtained fewer nutrients when it was younger.
The adult offspring of a pair of deer is shorter than its parents and obtained fewer nutrients when it was younger.

A horse is the same size as its parents and similar height to other horses of the same breed that it lives with on a farm.  

Answer 9

The example that best describes the influence of genetic factors is:

A horse is the same size as its parents and similar height to other horses of the same breed that it lives with on a farm.

This statement highlights the idea that genetic factors play a significant role in determining the size and height of the horse, as it is similar to its parents and other horses of the same breed. This suggests a genetic influence on growth characteristics.

Answer 10

You weigh a group of eight kittens for 6 days and get the following data (in lb.): 

1.6, 1.4, 1.1, 1.8, 1.3, 1.8, 1.2, 1.4

Select the correct average weight. Round your answer to one decimal place.

(1 point)
Responses

1.5 lb.
1.5 lb.

1.4 lb.
1.4 lb.

1.1 lb.
1.1 lb.

1.8 lb.

Answer 11

To find the average weight of the kittens, we first need to add up their weights and then divide by the number of kittens.

The weights of the kittens are: 1.6, 1.4, 1.1, 1.8, 1.3, 1.8, 1.2, 1.4.

1. Add the weights:

   • \( 1.6 + 1.4 + 1.1 + 1.8 + 1.3 + 1.8 + 1.2 + 1.4 = 12.6 \) lb.

2. Divide by the number of kittens (which is 8):

   • \( 12.6 \div 8 = 1.575 \) lb.

3. Round to one decimal place:

   • \( 1.575 \) rounds to \( 1.6 \) lb.

Since 1.6 lb. is not one of the options provided, it seems that the correct average to report based on the weights calculated is
1.5 lb. (as the closest and applicable rounded option in standard responses).

Thus, based on rounding to one decimal place with the provided choices: The correct answer is 1.5 lb.