1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify the wrong statement in context of heartwood :
A
It is highly durable.
B
It comprises dead elements with highly lignified walls
C
It conducts water and minerals efficiently
D
Organic compounds are deposited in it
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is made up of dead cells ?
A
Collenchyma
B
Xylem parenchyma
C
Phellem
D
Phloem
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
The vascular cambium normally gives rise to :
A
Primary phloem
B
Secondary xylem
C
Periderm
D
Phelloderm
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
The balloon-shaped structures called tyloses
A
are extensions of xylem parenchyma cells into vessels
B
originate in the lumen of vessels
C
are linked to the ascent of sap through xylem vessels
D
characterize the sapwood

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