centre; periphery
periphery; centre
periphery; periphery
centre; centre
A. centre; periphery
cambium
phloem fibres
thick-walled tracheids
xylem fibres
collenchyma
sclerenchyma
xylem
meristem
cork cambium
vascular cambium
endodermis
both (a) & (c)
Column -I | Column -II |
---|---|
A. Bulliform cells | I. Initiation of lateral roots |
B. Pericycle | II. Root |
C. Endarch xylem | III. Grasses |
D. Exarch xylem | IV. Dicot leaf |
E. Bundle sheath cells | V. Stem |
A III, B V, C IV, D I, E II
A II, B V, C I, D III, E IV
A II, B IV, C I, D III, E V
A III, B I, C V, D II, E IV
A. Spring wood or | I. Lighter in colour early wood |
---|---|
B. Autumn wood or | II. High density late wood |
.. | III. Low density |
.. | IV. Darker in colour |
.. | V. Larger number of xylem elements |
.. | VI. Vessels with wider cavity |
.. | VII. Lesser number of xylem elements |
.. | VIII. Vessels with small cavity |
A II, IV, VII, VIII; B I, III, V, VI
A I, II, VII, VIII; B III, IV, V, VI
A I, III, V, VI; B II, IV, VII, VIII
A I, III, VII, VIII; B II, IV, V, VI
Radial; Conjoint closed; Conjoint open
Conjoint closed; Conjoint open; Radial
Conjoint open; Conjoint closed; Radial
Bicollateral; Concentric; Radial
Column-I | Column-II |
---|---|
A. Cuticle | I. Guard cells |
B. Bulliform cells | II. Outer layer |
C. Stomata | III. Waxy layer |
D. Epidermis | IV. Empty colourless cell |
A III, B IV, C I, D II
A I, B II, C III, D IV
A III, B II, C IV, D I
A III, B II, C I, D IV
(iii) and (iv)
(i) and (ii)
(ii) and (iii)
(ii) and (iv)
in all the roots.
only in radicals.
only in tap roots.
only in adventitious roots.
cork and cork cambium,
cork cambium and cork,
secondary cortex and cork,
cork and secondary cortex,
simple pits on their radial walls.
bordered pits on their lateral walls.
simple and bordered pits on their end walls.
simple perforation on their end walls.
sapwood increases.
heartwood increase.
both sapwood and heartwood increases.
both sapwood and heartwood remains the same.
Only (i)
Only (iv)
Only (iii)
Only (v)
Parenchyma
Sclerenchyma
Collenchyma
Chlorenchyma
transpiration
guttation
gaseous exchange
both (a) & (c)
show alternate rings of xylem and sclerenchyma.
have only conjunctive tissue and phloem is formed by the activity of cambium.
show distinct annual rings.
not show distinct annual rings.
A Tracheid, B Vessel, C Xylem
A Vessel, B Tracheild, C Phloem
A Fibre, B Tracheid, C Bark
A Fibre, B Sclereid, C Casparian strips
Lateral meristem
Apical meristem
Intercalary meristem
Both
sclerenchyma
parenchyma
collenchyma
aerenchyma
lateral meristem
axillary bud
cork cambium
fascicular cambium
roots, stems, leaves
stems, roots, leaves
leaves, stems, roots
leaves, stems, leaves
live, without
dead, with
live, with
dead, without
Angiosperms
Gymnosperms
Pteridophytes
Bryophytes
cytoskeleton.
mitochondria.
endoplasmic reticulum.
chloroplasts.
secondary xylem and phloem.
primary xylem and phloem.
secondary xylem only.
primary phloem and secondary xylem.
bordered pits.
no ends walls.
broader lumen and perforated cross walls.
no protoplasm.
Lenticels occur in most woody trees.
Sclerenchymatous cells are usually present in cortex.
The vascular tissue system is divided into three main zones- cortex, pericycle and pith.
The conjoint vascular bundles usually have the xylem located only on the outer side of the phloem.
endarch
exarch
radial
closed
origin
function
position
development
Pith - Large and well developed in monocotyledonous root.
Root hairs - Helps in preventing water loss due to transpiration
Sieve tube elements - Its functions are controlled by the nucleus of companion cells.
Stomatal apparatus - Consists of stomatal aperture, guard cells and surrounding subsidiary cells