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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS
Anatomy of flowering plants practice · Easy
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91
Easy
91 of 128
Remembering
+4 | -1
The plant tissue having aquatic adaptation is
View answer and explanation
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.
92
Easy
92 of 128
Remembering
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The meristem, which develops into a primary vascular tissue is
View answer and explanation
Correct option: D
Procambium
Option D (Procambium) is correct because procambium is the meristematic tissue that differentiates into primary vascular tissues (xylem and phloem).
93
Easy
93 of 128
Remembering
+4 | -1
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.
94
Easy
94 of 128
Understanding
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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.
95
Easy
95 of 128
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.
96
Easy
96 of 128
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.
97
Easy
97 of 128
Understanding
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Select the odd one w.r.t. ground tissue system
View answer and explanation
Correct option: C
Epidermis
Option C (Epidermis) is correct because it is a dermal tissue, while pericycle, pith, and cortex are ground tissues.
98
Easy
98 of 128
Remembering
+4 | -1
Which of the following cell is enucleate at maturity?
View answer and explanation
Correct option: A
Sieve tube
Option A (Sieve tube) is correct because sieve tube elements lose their nuclei at maturity to allow for efficient translocation of sugars.
99
Easy
99 of 128
Analyzing
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The transverse section of a plant part shows following anatomical features:
(a) Central pith.
(b) Conjoint and open vascular bundles.
(c) Medullary rays present in between the vascular bundles.
(d) Hypodermis is collenchymatous.
Identify the category of plant and its part
(a) Central pith.
(b) Conjoint and open vascular bundles.
(c) Medullary rays present in between the vascular bundles.
(d) Hypodermis is collenchymatous.
Identify the category of plant and its part
View answer and explanation
Correct option: B
Dicotyledonous stem
Option B (Dicotyledonous stem) is correct because the combination of central pith, conjoint and open vascular bundles, medullary rays, and collenchymatous hypodermis is characteristic of dicot stems.
100
Easy
100 of 128
Remembering
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…A… are structures present in the epidermis of leaves. They regulate process of transpiration and …B… exchange. It is composed of two bean-shaped cells known as …C… cells.
Choose the correct combination of A, B and C from the following options
Choose the correct combination of A, B and C from the following options
View answer and explanation
Correct option: A
A–Stomata, B–gaseous, C–guard
Option A is correct because stomata are structures in the epidermis of leaves that regulate gaseous exchange and transpiration, and they are composed of guard cells.
101
Easy
101 of 128
Remembering
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The beneficial use of epidermal layer is
View answer and explanation
Correct option: C
Cotton fibre
Option C (Cotton fibre) is correct because cotton fibers are derived from the epidermal layer of cotton seeds and are used beneficially.
102
Easy
102 of 128
Remembering
+4 | -1
Subsidiary cells are the specialised cell in the
View answer and explanation
Correct option: A
Vicinity of guard cell
Option A is correct because subsidiary cells are specialized epidermal cells located in the immediate vicinity of guard cells, supporting their function.
103
Easy
103 of 128
Remembering
+4 | -1
Root caps are absent in
View answer and explanation
Correct option: C
Hydrophytes
Option B (If both Assertion and Reason are true but Reason is not the correct explanation of Assertion) is correct because prickles do have multiple roles and are superficial in origin, but the superficial origin doesn't explain the multiple roles.
104
Easy
104 of 128
Remembering
+4 | -1
Select the correct option about monocot stem.
View answer and explanation
Correct option: C
Has scattered vascular bundles
Option C is correct because monocot stems are characterized by having scattered vascular bundles throughout the ground tissue.
105
Easy
105 of 128
Remembering
+4 | -1
Collenchyma resembles parenchyma in being
View answer and explanation
Correct option: D
Devoid of chloroplasts
Option D (Devoid of chloroplasts) is correct because both collenchyma and parenchyma are typically devoid of chloroplasts, although exceptions exist.
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106
Easy
106 of 128
Understanding
+4 | -1
Grass stem elongates after initial growth due to:
View answer and explanation
Correct option: C
Intercalary meristem
Option C (Intercalary meristem) is correct because intercalary meristems are located at the base of leaves and internodes in grasses, allowing for regrowth and elongation after grazing or mowing.
107
Easy
107 of 128
Remembering
+4 | -1
On the basis of their structure and location, tissue system is of …… in plants
View answer and explanation
Correct option: B
3 types
Option B (3 types) is correct because the tissue system in plants is divided into three types: epidermal, ground, and vascular.
108
Easy
108 of 128
Remembering
+4 | -1
Cotton fibres which are obtained from Gossypium are:
View answer and explanation
Correct option: A
Surface fibre
Option A is correct. Cotton fibers obtained from Gossypium are surface fibers, specifically epidermal hairs of the seed.
109
Easy
109 of 128
Understanding
+4 | -1
Which of the characters are found in cells producing primary tissues ?
(I) Rich in protoplasm, conspicuous nucleus
(II) Thick cell wall, few plasmodesmatal connections
(III) Thin cell wall, many plasmodesmatal connections
(IV) Lignin in cell wall, inconspicuous nucleus
(I) Rich in protoplasm, conspicuous nucleus
(II) Thick cell wall, few plasmodesmatal connections
(III) Thin cell wall, many plasmodesmatal connections
(IV) Lignin in cell wall, inconspicuous nucleus
View answer and explanation
Correct option: C
(I, III)
Option C (I, III) is correct because cells producing primary tissues are rich in protoplasm with a conspicuous nucleus and have thin cell walls with many plasmodesmatal connections to facilitate communication and transport.
110
Easy
110 of 128
Remembering
+4 | -1
In woody trees, the exchange of gases between the outer atmosphere and the internal tissue of the stem takes place through
View answer and explanation
Correct option: D
Lenticels
Option D (Lenticels) is correct because lenticels are specialized pores on the bark of woody trees that allow for gas exchange between the atmosphere and internal tissues.
111
Easy
111 of 128
Understanding
+4 | -1
Assertion (A) Phloem fibres or bast fibres are made up of
collenchymatous cells.
Reason (R) Phloem fibres are generally found in secondary
pholem.
collenchymatous cells.
Reason (R) Phloem fibres are generally found in secondary
pholem.
View answer and explanation
Correct option: D
If A is false, but R is true
Option D (A is false, but R is true) is correct because phloem fibers are made of sclerenchymatous cells, not collenchymatous cells, and they are generally found in secondary phloem.
112
Easy
112 of 128
Remembering
+4 | -1
Aerenchyma is present in which of the following plants ?
(1) Neptunia
(2) potamogeton
(3) Bryophyllum
(4) Vallisneria
(1) Neptunia
(2) potamogeton
(3) Bryophyllum
(4) Vallisneria
View answer and explanation
Correct option: C
2 and 4 are correct
Option C (2 and 4 are correct) is correct because Potamogeton and Vallisneria are aquatic plants that possess aerenchyma tissue to provide buoyancy and facilitate gas exchange in submerged environments.
113
Easy
113 of 128
Remembering
+4 | -1
In monocotyledonous stem, the vascular bundles are
View answer and explanation
Correct option: D
Both (2) and (3)
Option D is correct because monocotyledonous stems have conjoint and closed vascular bundles that are scattered throughout the ground tissue.
114
Easy
114 of 128
Understanding
+4 | -1
Assertion: Aerenchyma found in aquatic plant.
Reason: It contains air cavities and provides buoyancy to
aquatic plant.
Reason: It contains air cavities and provides buoyancy to
aquatic plant.
View answer and explanation
Correct option: A
If both the assertion and the reason are true and the
reason is a correct explanation of the
assertion
reason is a correct explanation of the
assertion
Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because aerenchyma does provide buoyancy due to air cavities.
115
Easy
115 of 128
Understanding
+4 | -1
Which of the following cells is not totipotent?
View answer and explanation
Correct option: C
Sieve cell
Option C (Sieve cell) is correct because sieve cells are specialized for transport and lack the ability to differentiate into other cell types, unlike totipotent cells.
116
Easy
116 of 128
Understanding
+4 | -1
Growth of stem in diameter is due to
View answer and explanation
Correct option: B
Lateral meristem
Option B is correct because lateral meristems are responsible for secondary growth, which increases the diameter of the stem.
117
Easy
117 of 128
Remembering
+4 | -1
Vessels and companion cells are absent in :
View answer and explanation
Correct option: A
Gymnosperm and pteridophyta
Option A (Gymnosperm and pteridophyta) is correct because vessels and companion cells are absent in gymnosperms and pteridophytes; they are characteristic of angiosperms.
118
Easy
118 of 128
Understanding
+4 | -1
Assertion: Secondary growth won’t occur in monocot stem
Reason: Vascular bundles are closed in monocot stem.
Reason: Vascular bundles are closed in monocot stem.
View answer and explanation
Correct option: A
If both the assertion and the reason are true and the
reason is a correct explanation of the
assertion
reason is a correct explanation of the
assertion
Option A is correct because the absence of secondary growth in monocot stems is directly related to their closed vascular bundles, which lack cambium.
119
Easy
119 of 128
Understanding
+4 | -1
All of the following exhibit an increase in girth (diameter), except
View answer and explanation
Correct option: C
Stems of monocot
Option C (Stems of monocot) is correct because monocot stems typically lack a vascular cambium and therefore do not exhibit an increase in girth (secondary growth).
120
Easy
120 of 128
Remembering
+4 | -1
Outer most layer of primary plant body is
View answer and explanation
Correct option: B
Epidermis
Option B (Epidermis) is correct because the epidermis is the outermost layer of the primary plant body, providing protection and regulating gas exchange.
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 128 questions