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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS
Anatomy of flowering plants practice · Mixed difficulty
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271
Hard
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Remembering
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The waxy substance associated with cell wall of cork cells is :
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Correct option: A
Suberin
Option A (Suberin) is correct because suberin is a waxy substance that impregnates the cell walls of cork cells, making them impermeable to water and gases.
272
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Understanding
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[A]: Sieve tube members have abundant cytoplasm but there is no nucleus.
[R]: The nucleus disintegrates during their development.
[R]: The nucleus disintegrates during their development.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A is correct because sieve tube members lack a nucleus due to disintegration during development.
273
Easy
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Remembering
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The cells of the endodermis are rich in …A… grains and layer is referred to as …B… sheath. Select the correct combination of A an B from the options given below
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Correct option: D
A-starch; B-starch
Option D (A-starch; B-starch) is correct because the cells of the endodermis are rich in starch grains, and this layer is referred to as the starch sheath.
274
Easy
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Remembering
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The plant tissue having aquatic adaptation is
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Correct option: C
Aerenchyma
Option C (Aerenchyma) is correct because aerenchyma tissue contains large air spaces, providing buoyancy and facilitating gas exchange in aquatic plants.
275
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Parenchymatous cells are usually present in the
I. pericycle
II. pith
III. medullary rays
IV. primary root
V. secondary root
VI. primary stem
VII. secondary stem
Select the correct combinations from the given options
I. pericycle
II. pith
III. medullary rays
IV. primary root
V. secondary root
VI. primary stem
VII. secondary stem
Select the correct combinations from the given options
View answer and explanation
Correct option: B
All except V and VII
Option B is correct because parenchymatous cells are found in pericycle, pith, medullary rays, primary root, and primary stem, but not typically in secondary root and secondary stem.
276
Easy
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Remembering
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The meristem, which develops into a primary vascular tissue is
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Correct option: D
Procambium
Option D (Procambium) is correct because procambium is the meristematic tissue that differentiates into primary vascular tissues (xylem and phloem).
277
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Quiescent centre is present in
View answer and explanation
Correct option: B
Root apex
Option B (Root apex) is correct because the quiescent center is a region of inactive cells found in the root apical meristem.
278
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Remembering
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Starch sheath is found in endodermis of
View answer and explanation
Correct option: A
Dicot stem
Option A (Dicot stem) is correct because the starch sheath, a layer rich in starch grains, is found in the endodermis of dicot stems.
279
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Analyzing
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I. Usually cortex of stem is formed the during secondary growth of the stem II. It is a couple of layer thick III. It is made up of thin walled rectangular cells Select the incorrect statements
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Correct option: D
None of these
Option D is correct because all three statements are incorrect. Cortex is formed during primary growth, is many layers thick, and is made of thin-walled cells.
280
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Understanding
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Which of the following plant cells will show totipotency?
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Correct option: C
Meristem
Option C is correct because meristematic cells have the ability to differentiate into any cell type (totipotency).
281
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Vascular bundle with cambium is called
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Correct option: B
Open
Option B is correct. A vascular bundle with cambium is called open because the cambium allows for secondary growth.
282
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When strong wind blows, the plants bend down and then again become erect. This flexibility in plants is due to
View answer and explanation
Correct option: C
Collenchyma
Option C (Collenchyma) is correct because collenchyma tissue provides flexibility to plants, allowing them to bend without breaking.
283
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Understanding
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Which of the following statements is not related to parenchyma?
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Correct option: C
They are present in all parts of higher plant except root
Option C (They are present in all parts of higher plant except root) is correct because parenchyma is present in roots as well.
284
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Remembering
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Storage of food is the main function of:-
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Correct option: D
Parenchyma
Option D is correct because parenchyma cells are primarily involved in storage of food and other substances.
285
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Vascular cambium of stem is
View answer and explanation
Correct option: A
Partly primary and partly secondary meristem
Option A (Partly primary and partly secondary meristem) is correct because the vascular cambium in stems originates partly from procambium (primary) and partly from interfascicular cambium (secondary).
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286
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Remembering
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Trichomes in shoot system are:
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Correct option: B
Usually multicellular
Option B (Usually multicellular) is correct because trichomes on shoots are typically multicellular, although unicellular trichomes can also occur.
287
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Remembering
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In dicotyledonous root
View answer and explanation
Correct option: C
2 to 4 xylem and phloem patches are found
Option C (2 to 4 xylem and phloem patches are found) is correct because dicotyledonous roots typically have 2 to 4 xylem and phloem strands.
288
Medium
288 of 394
Understanding
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Which is not correct about Sclereids?
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Correct option: A
These are parenchyma cells with thickened lignified walls
Option A is correct because sclereids are not parenchyma cells but are a type of sclerenchyma cell with thickened, lignified walls.
289
Medium
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Understanding
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Two cross-sections of stem and root appear simple, when viewed by naked eye. But under microscope, they can be differentiated by
View answer and explanation
Correct option: D
Endarch condition of stem and exarch condition of root
Option D is correct because the arrangement of protoxylem differs in roots and stems; roots have exarch protoxylem while stems have endarch protoxylem.
290
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Cambium activity is
View answer and explanation
Correct option: C
More active towards the inner side of stem
Option C (More active towards the inner side of stem) is correct because the cambium produces more secondary xylem (wood) towards the inner side than secondary phloem towards the outer side.
291
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[A]: Sclerenchyma cells are rarely found in plants.
[R]: Sclerencyma cells are dead but have protoplasm.
[R]: Sclerencyma cells are dead but have protoplasm.
View answer and explanation
Correct option: D
Both A and R are false
Option D is correct because sclerenchyma cells are indeed found in plants, and they are dead cells without protoplasm.
292
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Remembering
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Largest number of chloroplast is found in
View answer and explanation
Correct option: A
Palisade tissue
Option A is correct because palisade tissue, being the primary photosynthetic tissue in leaves, contains the largest number of chloroplasts.
293
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Remembering
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Barrel shape cells are ………… in dicot root
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Correct option: B
Endodermis
Option B (Endodermis) is correct because the endodermis in dicot roots has barrel-shaped cells with Casparian strips.
294
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Understanding
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Large number of xylary elements having vessels with wider activity are produced in
View answer and explanation
Correct option: D
(a) or (c )
Option D ((a) or (c )) is correct because spring wood and early wood are synonymous and characterized by large numbers of xylary elements with wider vessels.
295
Easy
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Remembering
+4 | -1
Desert grasses often roll their leaves due to presence of
View answer and explanation
Correct option: B
Bulliform cells
Option B (Bulliform cells) is correct because bulliform cells, when they lose water, cause the leaves to curl inwards, reducing water loss in desert grasses.
296
Hard
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Remembering
+4 | -1
In the following pairs, where do you get lignin in both the element?
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Correct option: C
Sclerenchyma and trachea
Option C (Sclerenchyma and trachea) is correct because both sclerenchyma cells and tracheids (components of trachea) are typically lignified.
297
Medium
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Remembering
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Which of the following characters belong to sclerenchyma?
I. Consists of long narrow cells with thick lignified cell walls
II. Having few or numerous pits
III. They are usually dead and without protoplasms
I. Consists of long narrow cells with thick lignified cell walls
II. Having few or numerous pits
III. They are usually dead and without protoplasms
View answer and explanation
Correct option: D
I, II and III
Option D (I, II and III) is correct because all three statements accurately describe the characteristics of sclerenchyma cells.
298
Hard
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Remembering
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Cells of permanent tissues are specialized
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Correct option: C
Both structurally and functionally
Option C (Both structurally and functionally) is correct because permanent tissues have differentiated to perform specific functions and have also undergone structural changes to support those functions.
299
Hard
299 of 394
Remembering
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From where does interfascicular cambium forms?
View answer and explanation
Correct option: D
Medullary rays
Option D (Medullary rays) is correct because interfascicular cambium develops from the cells of medullary rays.
300
Medium
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Understanding
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The protoxylem and metaxylem in the stem lies towards
View answer and explanation
Correct option: D
The pith and periphery of organ, respectively
Option D (The pith and periphery of organ, respectively) is correct because in stems, protoxylem lies towards the pith (center) and metaxylem lies towards the periphery.
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 271-300 of 394 questions