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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS
Anatomy of flowering plants practice · Mixed difficulty
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151
Medium
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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.
152
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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).
153
Hard
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In an experiment, a student cut a transverse section of young stem of a plant which he has taken from his school garden. After observing it under the microscope how would he ascertain whether it is a monocot stem or a dicot stem?
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Correct option: C
With the help of vascular bundles.
Option C is correct because the arrangement and characteristics of vascular bundles are key distinguishing features between monocot and dicot stems.
154
Easy
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One of the following is absent in the monocots :
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Correct option: A
Cambium
Option A is correct. Cambium is absent in monocots, which is why they do not exhibit secondary growth.
155
Medium
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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.
156
Easy
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Understanding
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When sunflower leaf is exposed to sunlight, the solar radiations first pass through its upper epidermis and then through
View answer and explanation
Correct option: D
Palisade parenchyma
Option D (Palisade parenchyma) is correct because the palisade parenchyma is the layer directly beneath the upper epidermis and is the first to receive sunlight.
157
Easy
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The size of vascular bundles on the leaflet depends upon the
I. leaf margin II. leaf petiole
III. leaf size IV. leaf veination
Select the correct combination of options given below
I. leaf margin II. leaf petiole
III. leaf size IV. leaf veination
Select the correct combination of options given below
View answer and explanation
Correct option: C
III and IV
Option C (III and IV) is correct because the size of vascular bundles depends on the overall leaf size and the pattern of leaf veination.
158
Hard
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Remembering
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Which of the following have living cytoplasm?
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Correct option: D
Companion cells
Option D (Companion cells) is correct because companion cells are living cells with cytoplasm and a nucleus, unlike vessels, tracheids, and sclerenchyma which are dead at maturity.
159
Medium
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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.
160
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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.
161
Hard
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A narrow layer of thin walled cells found between phloem/bark and wood of a dicot is
View answer and explanation
Correct option: B
Vascular cambium
Option B (Vascular cambium) is correct because the vascular cambium is a narrow layer of thin-walled cells located between the phloem/bark and wood in dicots.
162
Easy
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In dicot stem, secondary xylem lie towards the …A… and secondary phloem lie towards the …B… .
Choose the correct combination of options for A and B
Choose the correct combination of options for A and B
View answer and explanation
Correct option: A
A-pith; B-periphery
Option A (A-pith; B-periphery) is correct because in a dicot stem, secondary xylem is formed towards the pith, and secondary phloem is formed towards the periphery.
163
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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.
164
Hard
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Remembering
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Radial vascular bundles characteristically occur in?
View answer and explanation
Correct option: C
Monocot and Dicot roots
Option C (Monocot and Dicot roots) is correct because radial vascular bundles, where xylem and phloem alternate in radii, are characteristic of both monocot and dicot roots.
165
Hard
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Remembering
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Pericycle is Sclerenehymatous in
View answer and explanation
Correct option: B
Dicot stem
Option C (Dicot root) is correct because the pericycle in dicot roots is made up of sclerenchymatous cells.
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166
Medium
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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.
167
Hard
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Understanding
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Which of the following statements is not correct for stomatal apparatus?
View answer and explanation
Correct option: C
Guard cells does not possess subsidiary cells.
Option C is correct because guard cells do possess subsidiary cells, which are specialized epidermal cells surrounding the guard cells that aid in stomatal movement.
168
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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.
169
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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.
170
Hard
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Understanding
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Dicot stem has open vascular bundles. They are called 'open' because they
View answer and explanation
Correct option: B
Are capable of producing secondary xylem and phloem
Option B is correct because the presence of cambium allows dicot stems to produce secondary xylem and phloem, making them \"open\".
171
Easy
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Understanding
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Wilting of plant is due to
View answer and explanation
Correct option: B
Blockage of xylem
Option B (Blockage of xylem) is correct because xylem is responsible for transporting water throughout the plant, and its blockage leads to water deficiency and wilting.
172
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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.
173
Medium
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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).
174
Medium
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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.
175
Medium
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Remembering
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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.
176
Medium
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Understanding
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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.
177
Hard
177 of 394
Understanding
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Which layer is absent in stele?
View answer and explanation
Correct option: C
Endodermis
Option C (Endodermis) is correct because the endodermis is the innermost layer of the cortex, surrounding the stele, but is not part of the stele itself.
178
Easy
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Monocot stem has all, except
View answer and explanation
Correct option: C
Medullary rays
Option C (Medullary rays) is correct because medullary rays, which are parenchymatous extensions between vascular bundles, are absent in monocot stems.
179
Medium
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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.
180
Hard
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Remembering
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Epidermal tissue system is derived from?
View answer and explanation
Correct option: A
Protoderm
Option A (Protoderm) is correct because the epidermis, which constitutes the epidermal tissue system, originates from the protoderm, a primary meristem.
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 151-180 of 394 questions