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 3^rd week

= 9 -7

= 2 cm

D. Growth of plant B from the end of 2^nd week to the end of 3^rd week:

= 10 -7

= 3 cm

E. Growth of plant A during 1^st week:

= 2-0

= 2cm

Growth of plant A during 2^nd week:

= 7 -2

= 5 cm

Growth of plant A during 3^rd week:

= 9 -7

= 2 cm

Hence, A grew the most in its 2^nd week i.e. 5 cm.

F. Growth of plant B during 1^st week:

= 1 -0

= 1 cm

Growth of plant B during 2^nd week:

= 7 -1

= 6 cm

Growth of plant B during 3^rd week:

= 10 -7

= 3 cm

Hence, plant B grew the least in 1^st week i.e. 1cm

G. The heights of both the plants were same at the end of 2^nd week.