Question

plant | type | average number of chloroplasts per cell | average size of the chloroplasts ($\mu m^2$) | biomass after 70 days (g plant$^{-1}$)
1 | wild - type | 100 | 14 | 1.50
2 | mutant | 2 | 198 | 0.80
3 | wild - type | 85 | 15 | 1.10
4 | mutant | 45 | 34 | 0.55
which question can the students answer with the data from the investigation?

Explanation:

To determine which question can be answered, we analyze the data:

Key Observations:

• The table compares Wild - type and Mutant plants across three variables:

1. Average number of chloroplasts per cell.
2. Average size of chloroplasts (in $\boldsymbol{\mu m^2}$).
3. Biomass after 70 days (in $\boldsymbol{g\ plant^{-1}}$).

Interpreting the Data:

We can explore relationships between these variables. For example:

• Compare chloroplast number/size between wild - type and mutant plants.
• Analyze how chloroplast traits (number, size) correlate with biomass (a measure of plant growth/productivity).

Example of a Answerable Question:

A valid question could be: “How do chloroplast number and size in wild - type vs. mutant plants relate to plant biomass after 70 days?”

To answer this, we can:

1. Compare wild - type (rows 1, 3) and mutant (rows 2, 4) for chloroplast number/size.
2. Relate these traits to the “Biomass after 70 days” column.

For instance:

• Wild - type plants (rows 1, 3) generally have more chloroplasts per cell (100, 85) but smaller chloroplasts (14, 15 $\mu m^2$) and higher biomass (1.50, 1.10 g) than mutants (rows 2, 4: 2, 45 chloroplasts per cell; 198, 34 $\mu m^2$ size; 0.80, 0.55 g biomass).

Conclusion:

The data allows answering questions about the relationship between chloroplast characteristics (number, size) and plant biomass (or comparing wild - type vs. mutant for these traits).

Answer:

Questions like "How do chloroplast number and size differ between wild - type and mutant plants, and how do these traits relate to plant biomass after 70 days?" can be answered with the data. (Or other questions analyzing the relationship between chloroplast traits and biomass, or comparing wild - type/mutant for chloroplast/biomass metrics.)