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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.

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 for a week under different conditions and finds a journal article 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.

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.
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7 answers

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 for a week under the same conditions and finds journal articles that describe the growth rates of each species.

This response indicates that Ruby is measuring multiple species under controlled conditions, which allows for a fair comparison of their growth rates. Additionally, finding journal articles adds credible research to support her investigation.

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

1.0
1.0

1.2
1.2

1.15
1.15
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To calculate the average weight of the kittens, you need to sum the weights and then divide by the number of kittens.

The weights are: 1.05, 1.2, 1.15, 1.2, 1.4.

  1. First, sum the weights: 1.05 + 1.2 + 1.15 + 1.2 + 1.4 = 6.1 pounds.

  2. Then divide by the number of kittens (which is 5): Average weight = Total weight / Number of kittens = 6.1 / 5 = 1.22 pounds.

So, the average weight of the kittens is approximately 1.2 pounds (when rounded to one decimal place).

Therefore, the correct response is:

1.2

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

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

sum of individual plant heights divided by total number of plants

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

average change in plant height divided by number of days

This definition correctly identifies how growth rate is typically calculated by taking the total change in height over a specific period (in this case, days) and averaging it, which gives you the growth rate per day.

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.

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 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.

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.
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.
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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 indicates that the horse's size and height are influenced by its genetics, including the traits inherited from its parents and the genetic similarities observed within its breed.