NTA Abhyas NEET2020BotanyAnatomy of Flowering PlantsPractice
Which tissue is not correctly related to its fate during the secondary growth?
Options
- ATissue Fate during secondary growth Secondary xylem Produced in high amount
- BTissue Fate during secondary growth Primary phloem Produced in low amount
- CTissue Fate during secondary growth Cambial ring Cut off secondary permanent tissue on both side
- DTissue Fate during secondary growth Secondary phloem Synthesized on outer side
Correct answer
B. Tissue Fate during secondary growth Primary phloem Produced in low amount
Step-by-step solution
Mechanism in secondary growth in vascular region of dicot stem 1 . Vascular cambium (intrafscicular cambium) alongwith interfascicular cambium forms a continuous ring of cambium. 2 . Cambial ring becomes active and cut off secondary phloem towards outer side and secondary xylem towards inner side. 3 . Secondary xylem is produced more in quantity as cambium is more active in its inner part. 4 . When secondary growth repeats few more times, high amount of secondary xylem is accumulates which results in crushing of th