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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS
Anatomy of flowering plants practice · Mixed difficulty
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91
Hard
91 of 394
Remembering
+4 | -1
The stomata in an isobilateral leaf are
View answer and explanation
Correct option: D
Present on both the surfaces of epidermis
Option D (Present on both the surfaces of epidermis) is correct because isobilateral leaves (like those of monocots) have stomata distributed on both the adaxial and abaxial epidermal surfaces.
92
Medium
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Remembering
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All the tissues on the innerside of the endodermis constitutes together to form
View answer and explanation
Correct option: D
Stele
Option D (Stele) is correct because the stele includes all tissues inside the endodermis, such as the pericycle, vascular bundles, pith, and conjunctive tissue.
93
Hard
93 of 394
Remembering
+4 | -1
The crunchy and granular feeling when we chew pear fruit is due to
View answer and explanation
Correct option: D
Sclerenchyma
Option D (Sclerenchyma) is correct because sclereids, a type of sclerenchyma cell, are responsible for the gritty texture in pears.
94
Easy
94 of 394
Remembering
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The outer walls of guard cells (away from stomatal pore) are …A…. While the inner walls (towards the stomatal pore) are …B… .
Choose the correct combination of A and B
Choose the correct combination of A and B
View answer and explanation
Correct option: B
A-thin, B-thick
Option B (A-thin, B-thick) is correct because the outer walls of guard cells are thin to allow for easier bending, while the inner walls are thick to provide structure and control the stomatal pore.
95
Medium
95 of 394
Understanding
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A mature sieve tube differs from a vessel in
View answer and explanation
Correct option: B
Absence of lignified walls
Option B (Absence of lignified walls) is correct because sieve tubes have cellulose walls, while vessels have lignified walls for support.
96
Hard
96 of 394
Remembering
+4 | -1
Periderm includes:-
View answer and explanation
Correct option: C
Phelloderm, Phellogen and phellem
Option C (Phelloderm, Phellogen and phellem) is correct because periderm consists of phelloderm, phellogen (cork cambium), and phellem (cork).
97
Medium
97 of 394
Understanding
+4 | -1
Select the wrong statements
I. Primary and secondary phloem gets crushed during secondary growth
II. During secondary growth, primary xylem remains more or less intact
I. Primary and secondary phloem gets crushed during secondary growth
II. During secondary growth, primary xylem remains more or less intact
View answer and explanation
Correct option: D
Both are correct
Option D (Both are correct) is correct because during secondary growth, primary and secondary phloem are crushed, and primary xylem remains intact.
98
Medium
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Understanding
+4 | -1
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following
View answer and explanation
Correct option: B
Flaccidity of bulliform cells
Option B (Flaccidity of bulliform cells) is the most appropriate reason because when bulliform cells lose water and become flaccid, the leaf curls inward to reduce water loss.
99
Easy
99 of 394
Remembering
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Mesophyll is a tissue which is present in leaf
View answer and explanation
Correct option: A
Between the upper and lower epidermis
Option A is correct because mesophyll tissue is located between the upper and lower epidermis in a leaf.
100
Easy
100 of 394
Understanding
+4 | -1
Which of the following statements is correct?
View answer and explanation
Correct option: B
Xylem is made of living and non-living cells
Option B (Xylem is made of living and non-living cells) is correct because xylem consists of both living parenchyma cells and non-living tracheids, vessels, and fibers.
101
Easy
101 of 394
Understanding
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Assertion (A): Grasses get regenerated even after grazed by herbivores
Reason (R): In grasses meristems are present in between mature tissues, Options:
Reason (R): In grasses meristems are present in between mature tissues, Options:
View answer and explanation
Correct option: A
(A) and (R) are true and (R) is the correct explanation of (A).
Option A ((A) and (R) are true and (R) is the correct explanation of (A)) is correct because grasses regenerate due to intercalary meristems present between mature tissues.
102
Medium
102 of 394
Remembering
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Which is true for Meristematic tissue?
View answer and explanation
Correct option: A
Their cells have dense cytoplasm and prominent nuclei
Option A (Their cells have dense cytoplasm and prominent nuclei) is correct because meristematic cells are actively dividing and require these features.
103
Easy
103 of 394
Remembering
+4 | -1
Cuticle is absent in which part of plant?
View answer and explanation
Correct option: B
Root
Option B (Root) is correct because the cuticle, a waxy layer, is generally absent in roots to facilitate water and nutrient absorption.
104
Hard
104 of 394
Understanding
+4 | -1
Select the incorrect statement from the followings:
View answer and explanation
Correct option: A
Open conjoint, collateral or bicollateral vascular bundles found in monocot stem.
Option A is correct because monocot stems have closed, not open, vascular bundles.
105
Easy
105 of 394
Understanding
+4 | -1
Choose the correct statement
View answer and explanation
Correct option: A
A group of cell having common origin generally perform common function
Option A is correct because cells of common origin usually perform similar functions due to their shared genetic programming and developmental history.
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106
Easy
106 of 394
Remembering
+4 | -1
Bulliform cells found in
View answer and explanation
Correct option: B
Leaf of wheat
Option B (Leaf of wheat) is correct because bulliform cells are commonly found in the leaves of grasses like wheat, aiding in leaf rolling to conserve water.
107
Hard
107 of 394
Application
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A dendrochronologist observed total 22 rings of spring wood and autumn wood in a dicot stem in 1998. How many annual rings will be observed by him in 2007 ?
View answer and explanation
Correct option: C
20
Option C (20) is correct because the number of annual rings observed in a given year reflects the growth up to that year, so the number of rings observed in 1998 does not change the number of rings observed in 2007.
108
Medium
108 of 394
Analyzing
+4 | -1
Assertion: Stomata are absent in submerged
hydrophytes.
Reason: Respiration occurs by means of air
chambers in submerged plants.
hydrophytes.
Reason: Respiration occurs by means of air
chambers in submerged plants.
View answer and explanation
Correct option: B
If both Assertion and Reason are true but Reason
is not the correct explanation of Assertion
is not the correct explanation of Assertion
Option B is correct. Both the assertion and the reason are true, but the reason is not the correct explanation for the assertion. Submerged hydrophytes lack stomata, and respiration occurs through general body surface, not specifically through air chambers.
109
Hard
109 of 394
Remembering
+4 | -1
Collenchymatous hypodermis occurs in?
View answer and explanation
Correct option: A
Dicot stem
Option A (Dicot stem) is correct because dicot stems typically have a collenchymatous hypodermis, which provides support to the stem.
110
Easy
110 of 394
Analyzing
+4 | -1
Which of the following statements are incorrect regarding internal organization of plant tissues?
A. Phloem parenchyma is absent in dicotyledonous stem
B. Monocot roots do not undergo secondary growth
C. Hypodermis is sclerenchymatous in monocotyledonous stem
D. Lysigenous cavities are found in vascular bundles of dicotyledonous stem
A. Phloem parenchyma is absent in dicotyledonous stem
B. Monocot roots do not undergo secondary growth
C. Hypodermis is sclerenchymatous in monocotyledonous stem
D. Lysigenous cavities are found in vascular bundles of dicotyledonous stem
View answer and explanation
Correct option: D
Option D is correct because phloem parenchyma is present in dicot stems and lysigenous cavities are found in monocot stems.
111
Medium
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Understanding
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I. Made up of sclerenchymatous cells
II. Generally absent in primary phloem
III. Much elongated and pointed
Given above characters belongs to which of the following?
II. Generally absent in primary phloem
III. Much elongated and pointed
Given above characters belongs to which of the following?
View answer and explanation
Correct option: A
Phloem fibre
Option A (Phloem fibre) is correct because phloem fibres are sclerenchymatous, generally absent in primary phloem, and are elongated and pointed.
112
Easy
112 of 394
Remembering
+4 | -1
Mesophylls of monocotyledon leaf are not differentiated into
View answer and explanation
Correct option: D
Both (a) and (b)
Option D (Both (a) and (b)) is correct because the mesophyll in monocot leaves is typically not differentiated into distinct palisade and spongy parenchyma layers.
113
Medium
113 of 394
Analyzing
+4 | -1
The transverse section of a plant shows following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath
(b) Large conspicuous parenchymatous ground tissue
(c) Vascular bundles conjoint and closed
(d) Phloem parenchyma absent
Identify the category of plant and its part:
(a) Large number of scattered vascular bundles surrounded by bundle sheath
(b) Large conspicuous parenchymatous ground tissue
(c) Vascular bundles conjoint and closed
(d) Phloem parenchyma absent
Identify the category of plant and its part:
View answer and explanation
Correct option: A
Monocotyledonous stem
Option A (Monocotyledonous stem) is correct because the anatomical features described are characteristic of a monocot stem.
114
Medium
114 of 394
Remembering
+4 | -1
Casparian strips on endodermis are seen in
View answer and explanation
Correct option: A
Monocot root
Option A is correct. Casparian strips are found on the endodermis of monocot roots, helping to regulate water and nutrient uptake.
115
Medium
115 of 394
Understanding
+4 | -1
Read the following statements
(i) Multicellular epidermal hair (ii) Collenchymatous hypodermis
(iii) Pith present (iv)Vascular bundles present in a ring i.e eustele
Above given features describe which of the following plant parts ?
(i) Multicellular epidermal hair (ii) Collenchymatous hypodermis
(iii) Pith present (iv)Vascular bundles present in a ring i.e eustele
Above given features describe which of the following plant parts ?
View answer and explanation
Correct option: C
Dicot stem
Option C (Dicot stem) is correct because dicot stems have multicellular epidermal hairs, collenchymatous hypodermis, a pith, and vascular bundles arranged in a ring (eustele).
116
Easy
116 of 394
Remembering
+4 | -1
The nature of cell occurring in medulla is
View answer and explanation
Correct option: D
Parenchymatous
Option D (Parenchymatous) is correct because the medulla, or pith, of a plant stem typically consists of parenchyma cells, which are involved in storage and other metabolic functions.
117
Easy
117 of 394
Remembering
+4 | -1
Interfascicular cambium is formed by the joining of
View answer and explanation
Correct option: B
Medullary rays to intrafascicular cambium
Option B (Medullary rays to intrafascicular cambium) is correct because interfascicular cambium is formed by the differentiation of medullary ray cells adjacent to the intrafascicular cambium.
118
Easy
118 of 394
Analyzing
+4 | -1
Mark the odd one w.r.t. the tissues of bark.
View answer and explanation
Correct option: A
Pith + primary xylem
Option A (Pith + primary xylem) is correct because pith and primary xylem are internal to the vascular cambium, while the other options are tissues that constitute the bark, which is external to the vascular cambium.
119
Medium
119 of 394
Understanding
+4 | -1
The functions of sieve tubes are controlled by
View answer and explanation
Correct option: C
Nucleus of companion cells
Option C (Nucleus of companion cells) is correct because companion cells, being closely associated with sieve tubes, provide the necessary proteins and other factors for sieve tube function through their nucleus.
120
Medium
120 of 394
Understanding
+4 | -1
What differentiates leaf of dicots from monocots?
View answer and explanation
Correct option: B
Differentiation of palisade and spongy parenchyma
Option B (Differentiation of palisade and spongy parenchyma) is correct because dicot leaves have distinct palisade and spongy parenchyma layers, while monocot leaves typically have a uniform mesophyll.
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 91-120 of 394 questions