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 three weeks. The results are shown by the line graph given below:

Study the above graph carefully and answer the questions given below:
(i) How high was plant A after (a) 2 weeks (b) 3 weeks?

(ii) How high was plant B after (a) 2 weeks (b) 3 weeks?

(iii) How much did plant A grow during the 3rd week?

(iv) How much did plant B grow from the end of the 2nd week to the end of the 3rd week?

(v) During which week did plant A grow most?

(vi) During which week did plant B grow least?

(vii) Were the two plants of the same height during any week shown here? Specify.

Answer 1

(i) Plant A was
(a) 7 cm high after 2 weeks.
(b) 9 cm high after 3 weeks.

(ii) Plant B was
(a) 7 cm high after 2 weeks.
(b) 10 cm high after 3 weeks.
(iii) Plant A grow 2 cm during the 3rd week.
(iv) Plant B grow 3 cm in the given period.
(v) Plant A grow most in 2nd week.
(vi) Plant B grow least in 1st week.
(vii) At the end of the 2nd week both plants were of same height can be seen in the graph.