14
MCQ (Single Correct Answer)
Fibres are likely to be absent in
A
secondary phloem
B
secondary xylem
C
primary phloem
D
leaves
15
MCQ (Single Correct Answer)
When we peel the skin of a potato tuber, we remove
A
periderm
B
epidermis
C
cuticle
D
sapwood
16
MCQ (Single Correct Answer)
A vesselless piece of stem possessing prominent sieve tubes would belong to
A
Pinus
B
Eucalyptus
C
Grass
D
Trochodendron
17
MCQ (Single Correct Answer)
Which one of the following cell types always divide by anticlinal cell division?
A
Fusiform initial cells
B
Root cap
C
Protoderm
D
Phellogen
18
MCQ (Single Correct Answer)
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
A
It is retained in the centre of the axis
B
It gets crushed
C
May or may not get crushed
D
It gets surrounded by primary phloem