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Subjects
Science State Board
Class 9
Organisation of tissues
Plant tissues
29.
Xylem and phloem
Exercise condition:
6
m.
Choose the best answer:
1
.
When mature, all the xylem components are dead, except
Xylem Vessels
Tracheids
Xylem parenchyma
Xylem fibres
2
.
Common structural feature of vessel elements and sieve tube elements is
They are enucleated
They are nucleated
Both are very efficient in the conduction of water
Both elements help to translocate the food
3
.
Regeneration of damaged growing grass following grazing is largely due to
Apical Meristem
Intercalary Meristem
Secondary Meristem
Lateral Meristem
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