NEETBotanyPlant - Growth and Development
During a specific phase of growth, certain plant cells lose their protoplasm and develop very strong, elastic, lignocellulosic secondary cell walls to carry water under extreme tension. Identify the developmental process involved and the specific cell type formed.
Options
- ADedifferentiation ; Tracheary elements
- BDifferentiation ; Tracheary elements
- CRedifferentiation ; Secondary xylem
- DDifferentiation ; Sieve tube elements
Correct answer
B. Differentiation ; Tracheary elements
Step-by-step solution
The cells that lose their protoplasm and develop strong, elastic, lignocellulosic secondary cell walls to carry water under extreme tension are the tracheary elements (tracheids and vessels) of the xylem. The process by which cells derived from root apical and shoot apical meristems and cambium mature to perform specific functions is called differentiation. During this process, they undergo major structural changes, such as the loss of protoplasm to form dead, hollow tracheary elements. Dedifferentiation is the reg