Assertion (A): In cymose tap root system, oldest branch lies very near the growing point of the root, while the youngest branch is farthest away from it.
Reason (R): In cymose tap root system, the primary root itself stops growing after sometime, but secondary roots carry on further growth of the root system.
[AIIMS 2007]
Explanation
In cymose tap root system the primary root itself stops growing after sometime. But secondary roots grow further. And hence the oldest branch lies very near to the growing point of the root, while the youngest one is farthest away from it. Cymose tap root system is found in shallow rooted plants such as pea, gram, etc
|
For more details click the links below... |
- Share with your friends! -
Login to post your comment here...
- or with social Account -