Question

For an experiment in Botany, two different plants, plant A and plant B were grown under similar laboratory conditions. Their heights were measured at the end of each week for 3 weeks. The results are shown by the following graph.
How much did Plant A grow during the 3rd week?

• A. $2cm$
• B. $3cm$
• C. $4cm$
• D. $5cm$

Answer 1

Answer: (A)

$2cm$

In the given graph, The dotted line represents the growth of the Plant $A$.

From the graph, we can observe that after $2$ weeks Plant $A$ has grown $7cm$ and

after $3$ weeks Plant $A$ has grown $9cm$

Therefore, during $3^{rd}$ week Plant $A$ has grown $9-7=2cm$