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The owner of a plant nursery wanted to t...

The owner of a plant nursery wanted to test the effectiveness of a new type of fertilizer. He measured the heights of 5 plants, and then gave each an equal amount of fertilizer. Two weeks later, he measured the heights of the plants again. The graph below shows the height of the plants before and after the addition of fertilizer.

What was the mean growth of the plants ?

A

4.5 cm

B

5 cm

C

5.5 cm

D

6 cm

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • Increase in the height of the plant is due to

    A
    Auxins
    B
    Cytokinins
    C
    Gibberellins
    D
    Ethylene

  • We can measure growth in a plant by using

    A
    auxonometer
    B
    horizontal microscope
    C
    crescograph
    D
    All of these

  • Legumious plants do not require the addition of nitrogenous fertilizers because

    A
    they can fix up atmospheric nitrogen.
    B
    of the presence of rhizobium bacteria in their root nodules.
    C
    they posses nitrogen in roots hence do not require external intake.
    D
    Both (1) and (2)