Plant tissues Meristematic tissue activity1

=Activity No # 1 - Observation of growth of root tips in onion=

Estimated Time
5 days

Materials/ Resources needed
2 glass jars, water, 2 onion bulbs, pair of scissors, note book, pencil etc.

Prerequisites/Instructions, if any
Observe the growth of roots every morning for 5 days.

Process (How to do the activity)

 * Take two glass jars and fill them with water.
 * Take two onion bulbs and place them one on each jar so that the roots of the bulbs dip in water.
 * Observe the root tips every morning and record their growth till the second day.
 * On the third day cut the root tips of the onion bulb in the second jar.
 * Record the growth of root tips in both the jars till the fifth day.

Developmental Questions (What discussion questions)

 * 1) Which of the two onions have longer roots?
 * 2) Do the roots grow even after the root tips were cut in jar two?

Evaluation (Questions for assessment of the child)

 * Why would the root tips stop growing in the jar two after cutting them?
 * Which tissue is necessary for the growth of the root tips?

Question Corner
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