Question

1.
Which of the two onions has longer roots ? Why?
2.
Do the roots continue to grow even after we remove their tips?
3.
Why would the tips stop growing in jar 2 after we cut them?​

Answer 1

Explanation:

3. Why would the roots stop growing in Jar 2? The roots of the onion in the jar 1 would be longer whereas the growth of roots of onion in jar 2 stop after the root tips of the onion bulb in jar 2 have been cut. When the root tips are cut, the apical meristem responsible for the increase in length gets removed.