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.


3
1