For an experiment in Botany, two different plants, plant A and plant B were grownunder similar laboratory conditions. Their heights were measured at the end of eachweek for 3 weeks. The results are shown by the following graph.
A. How high was Plant A after (i) 2 weeks (ii) 3 weeks?
B. How high was Plant B after (i) 2 weeks (ii) 3 weeks?
C. How much did Plant A grow during the 3rd week?
D. How much did Plant B grow from the end of the 2nd week to the end of the3rd week?
E. During which week did Plant A grow most?
F. During which week did Plant B grow least?
G. Were the two plants of the same height during any week shown here? Specify.
A.
i. After 2 weeks, the height of plant A was 7 cm.
ii. After 3 weeks, the height of plant A was 9 cm.
B.
i. After 2 weeks, the height of plant B was 7 cm.
ii. After 3 weeks, the height of plant B was 10 cm.
C. Growth of plant A during 3rd week
= 9 -7
= 2 cm
D. Growth of plant B from the end of 2nd week to the end of 3rd week:
= 10 -7
= 3 cm
E. Growth of plant A during 1st week:
= 2-0
= 2cm
Growth of plant A during 2nd week:
= 7 -2
= 5 cm
Growth of plant A during 3rd week:
= 9 -7
= 2 cm
Hence, A grew the most in its 2nd week i.e. 5 cm.
F. Growth of plant B during 1st week:
= 1 -0
= 1 cm
Growth of plant B during 2nd week:
= 7 -1
= 6 cm
Growth of plant B during 3rd week:
= 10 -7
= 3 cm
Hence, plant B grew the least in 1st week i.e. 1cm
G. The heights of both the plants were same at the end of 2nd week.