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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS
Anatomy of flowering plants practice · Medium
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61
Medium
61 of 199
Remembering
+4 | -1
In monocot stem, the hypodermis is
View answer and explanation
Correct option: B
Sclerenchymatous
Option B (Sclerenchymatous) is correct because the hypodermis in a monocot stem is typically made of sclerenchymatous cells, providing mechanical support.
62
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Remembering
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Conjoint vascular bundles are common in
View answer and explanation
Correct option: D
Both (2) and (3)
Option D (Both (2) and (3)) is correct because conjoint vascular bundles are characteristic of stems and leaves.
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Understanding
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Vascular system includes …A… bundles, which can be seen in the veins and the …B… . The size of vascular bundles are dependent on the size of …C… . The veins vary in thickness in the reticulate venation of the …D… leaves
Choose the correct combination of A to D
Choose the correct combination of A to D
View answer and explanation
Correct option: C
A-vascular, B-midrib, C-veins, D-dicot
Option C (A-vascular, B-midrib, C-veins, D-dicot) is correct because vascular bundles are found in veins and the midrib, and vein thickness varies in the reticulate venation of dicot leaves.
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Remembering
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Border parenchyma or bundle sheath is made up of
View answer and explanation
Correct option: C
Chlorenchymatous cell
Option C is correct. Border parenchyma or bundle sheath cells are typically chlorenchymatous, containing chloroplasts for photosynthesis.
65
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Remembering
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Companion cells in plants are associated with
View answer and explanation
Correct option: C
Sieve elements
Option C (Sieve elements) is correct because companion cells are closely associated with sieve elements in the phloem and aid in their function.
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Analyzing
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Assertion: Heartwood the greater part of
secondary xylem, is lighter in colour and consists
of dead elements with highly lignified walls.
Reason: The peripheral region of the secondary
xylem is dark brown in colour and is called
sapwood.
secondary xylem, is lighter in colour and consists
of dead elements with highly lignified walls.
Reason: The peripheral region of the secondary
xylem is dark brown in colour and is called
sapwood.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D is correct because the assertion is false (heartwood is darker, not lighter) and the reason is also false (sapwood is lighter, not darker).
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Understanding
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The quiescent centre in root meristem serves as a
View answer and explanation
Correct option: C
Reserve for replenishment of damaged cells of the meristem
Option C is correct because the quiescent center acts as a reserve for replenishing damaged meristem cells.
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Understanding
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Collenchyma is living mechanical tissue select the incorrect about it
View answer and explanation
Correct option: B
Lacks protoplasm at maturity
Option B (Lacks protoplasm at maturity) is correct because collenchyma is a living tissue and retains protoplasm at maturity, unlike sclerenchyma.
69
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Understanding
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What is true about a monocot leaf?
View answer and explanation
Correct option: C
Mesophyll not differentiated into palisade and spongy tissues
Option C (Mesophyll not differentiated into palisade and spongy tissues) is correct because monocot leaves typically have undifferentiated mesophyll.
70
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Remembering
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The apical meristem of the root is present
View answer and explanation
Correct option: B
In all the roots
Option B (In all the roots) is correct because the apical meristem is present in all types of roots, including taproots, adventitious roots, and radicals.
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Understanding
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The growth of root and stem in length with the help of apical meristem is called …A…. Apart from primary growth most dicotyledonous plant exhibit an increase in girth called …B… Choose the correct combination of A, B and C in respect to the above paragraph
View answer and explanation
Correct option: A
A-primary growth; B-secondary growth
Option A (A-primary growth; B-secondary growth) is correct because apical meristems contribute to primary growth (length), while lateral meristems contribute to secondary growth (girth).
72
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Understanding
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In the previous question
The diagram I stomata belongs to …A…
The diagram II stomata belongs to …B…
The diagram I stomata belongs to …A…
The diagram II stomata belongs to …B…
View answer and explanation
Correct option: B
A-dicots leaf; B-monocots
Option B (A-dicots leaf; B-monocots) is correct because dicot leaves typically have stomata scattered on both surfaces, while monocot leaves often have stomata arranged in parallel rows.
73
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Remembering
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Medullary rays are formed by the
View answer and explanation
Correct option: A
Radially placed parenchymatous cells between vascular bundles
Option A (Radially placed parenchymatous cells between vascular bundles) is correct because medullary rays are formed by parenchymatous cells arranged radially between vascular bundles.
74
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Remembering
+4 | -1
The vertical section of a dorsoventral leaf through the lamina shows three main parts namely, epidermis, …A… and vascular system. The epidermis, which covers the upper surface is …B… and lower surface is covered by …C… of the leaf.
Choose the correct combination of A, B and C
Choose the correct combination of A, B and C
View answer and explanation
Correct option: A
A-mesophyll, B-adaxial epidermis, C-abaxial epidermis
Option A is correct because the vertical section of a dorsoventral leaf shows epidermis, mesophyll, and vascular system, with the adaxial epidermis on the upper surface and the abaxial epidermis on the lower surface.
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Remembering
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Roots apical meristem occupies the …A… of roots, while shoot apical meristem occupies the distant most region of the …B… axis
Complete the above sentence with the correct combination of A and B
Complete the above sentence with the correct combination of A and B
View answer and explanation
Correct option: A
A-tip; B-stem
Option A (A-tip; B-stem) is correct because the root apical meristem is located at the tip of the root, and the shoot apical meristem is at the tip of the stem.
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Understanding
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Bark includes
I. phellogen
II. phellem
III. secondary phloem
IV. secondary xylem
Select the correct combination
I. phellogen
II. phellem
III. secondary phloem
IV. secondary xylem
Select the correct combination
View answer and explanation
Correct option: B
I, II and III
Option B (I, II and III) is correct because bark includes phellogen, phellem, and secondary phloem.
77
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Understanding
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Complex tissues are
View answer and explanation
Correct option: C
Both (a) and (b)
Option C (Both (a) and (b)) is correct because complex tissues are composed of multiple cell types and examples include xylem and phloem.
78
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Remembering
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A monocot stem with secondary growth is
View answer and explanation
Correct option: C
Yucca
Option C (Yucca) is correct because Yucca is a monocot that exhibits anomalous secondary growth.
79
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Analyzing
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Which of these parts in the complex permanent tissue involved in transport of water is different from the rest?
View answer and explanation
Correct option: D
Xylem parenchyma
Option D (Xylem parenchyma) is correct because it is the only living component of xylem, while the others (tracheids, vessels, and xylem fibers) are dead at maturity.
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Understanding
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In roots the
View answer and explanation
Correct option: C
Both (a) and (b)
Option C (Both (a) and (b)) is correct because in roots, the protoxylem lies towards the periphery (exarch condition) and the metaxylem lies towards the pith (center).
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Understanding
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Monocot root is not characterised by?
View answer and explanation
Correct option: D
Secondary growth
Option D (Secondary growth) is correct because monocot roots do not exhibit secondary growth.
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Remembering
+4 | -1
Which element of xylem is the characteristic feature of angiosperms?
View answer and explanation
Correct option: C
Vessels
Option C (Vessels) is correct because vessels are the characteristic feature of xylem in angiosperms, being more efficient in water transport than tracheids.
83
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Understanding
+4 | -1
Parenchyma is living tissue. Select the incorrect one about it
View answer and explanation
Correct option: D
Provides mechanical support to young stem as has lignin deposition
Option D is correct because parenchyma cells do not have lignin deposition and primarily provide support to young stems.
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Understanding
+4 | -1
In a vertical section of a dorsiventral leaf, the protoxylem in its midrib bundle
View answer and explanation
Correct option: B
Faces the ventral epidermis of the leaf
Option B (Faces the ventral epidermis of the leaf) is correct because in a dorsiventral leaf, the protoxylem is positioned towards the lower (ventral) surface.
85
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Analyzing
+4 | -1
Choose the wrong statement from the following
View answer and explanation
Correct option: D
None of the above
Option D (None of the above) is correct because all the statements A, B, and C are correct regarding plant tissues and meristems.
86
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Remembering
+4 | -1
Casparian thickenings are found in the cells of
View answer and explanation
Correct option: B
Endodermis of the root
Option B (Endodermis of the root) is correct because Casparian strips, which are thickenings, are found in the endodermis of the root.
87
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Remembering
+4 | -1
Mesophyll is well differentiated into palisade and spongy tissue in
View answer and explanation
Correct option: A
Dicot leaves
Option A (Dicot leaves) is correct because dicot leaves typically have a well-differentiated mesophyll layer consisting of palisade parenchyma and spongy parenchyma.
88
Medium
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Analyzing
+4 | -1
Which of these structures is not found in both a monocot root and a dicot stem?
View answer and explanation
Correct option: C
Parenchymatous pericycle
Option B (Polyarch xylem) is correct because polyarch xylem is characteristic of monocot roots but not dicot stems.
89
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Understanding
+4 | -1
Identify the plant parts whose transverse section shows a clear and prominent pith.
View answer and explanation
Correct option: B
Dicot stem and monocot root
Option B (Dicot stem and monocot root) is correct because dicot stems and monocot roots typically have a clear and prominent pith.
90
Medium
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Remembering
+4 | -1
Shape of phloem parenchyma is
View answer and explanation
Correct option: B
Elongated
Option B (Elongated) is correct because phloem parenchyma cells are typically elongated in shape.
Revision notes and key takeaways
Review ANATOMY OF FLOWERING PLANTS in your textbook or class notes, then use this set to check your understanding.
Showing 61-90 of 199 questions