Question

1. Explain the
the growth of roots in onion
an experiment
bulb with experiment?​

Answer 1

Answer:

Observation of Onion bulb experiment: This experiment suggests that growth of plant occurs from specific region.In first jar root tips were uncut, hence, the growth of root tips did not stop. However,in second jar, root tips were cut, i.e. apical meristem form the root tips were removed.

Answer 2

Answer:

The growth of plants occurs only in certain specific regions. In the above picture, the roots of onion bulb grow fast at the tip due to presence of dividing cells of meristematic tissues located only at these points.

Explanation:

Cover the root tip with a cover slip and then carefully push down on the cover slide with the wooden end of a dissecting probe. (Push hard, but do not twist or push the cover slide sideways). The root tip should spread out to a diameter of about 0.5- 1cm. Observe it under a compound microscope in 10x objective.