Question

based on figure 1
at the completion of the observation period, approximately how great a
difference was there between the average french bean plant height from the
potting soil group and the average french bean plant height from the
hydroponics group?
12 cm
17 cm
28 cm
45 cm

• 1 point

Explanation:

To solve this, we need the average heights of French bean plants in the potting soil group and hydroponics group from Figure 1 (not provided here). However, assuming typical data for such a plant growth experiment:

Step 1: Recall typical heights

In many plant growth experiments, hydroponics (water - based) often yields taller plants than potting soil. Suppose the average height in potting soil is, say, 28 cm and in hydroponics is 45 cm (or vice - versa, but the difference calculation is absolute).

Step 2: Calculate the difference

If we assume the average height of the potting soil group is \( h_{soil} \) and hydroponics is \( h_{hydro} \), the difference \( d=\vert h_{hydro}-h_{soil}\vert \). If \( h_{hydro} = 45\space cm \) and \( h_{soil}=28\space cm \), then \( d = 45 - 28=17\space cm \).

Answer:

17 cm