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NEET • BIOLOGY • MORPHOLOGY OF FLOWERING PLANTS
Morphology of flowering plants practice · Medium
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Showing 121-146 of 146 questions
121
Medium
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Understanding
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Monoecious inflorescence with unisexual flowers is?
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Correct option: D
all of these
Option D is correct because cyathium, hypanthodium, and spadix can all be monoecious inflorescences with unisexual flowers.
122
Medium
122 of 146
Remembering
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Fibrous root system originates from the base of
View answer and explanation
Correct option: B
Stem
Option B (Stem) is correct because fibrous root systems develop from the base of the stem.
123
Medium
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Analyzing
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Assertion: Flower of racemose inflorescence are
pollinated by insects.
Reason: In racemose head infloresence, the
florets are arranged in a centripetal fashion.
pollinated by insects.
Reason: In racemose head infloresence, the
florets are arranged in a centripetal fashion.
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 because both the assertion (racemose flowers pollinated by insects) and the reason (centripetal arrangement in racemose head) are true, but the reason is not the correct explanation for the assertion.
124
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Remembering
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Edible part if mango is
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Correct option: D
Mesocarp
Option D (Mesocarp) is correct because the mesocarp is the fleshy middle layer of the mango fruit, which is the primary edible part.
125
Medium
125 of 146
Application
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How many of the following plants belong to a family whose flowers have six tepals and six epitepalous stamens?
View answer and explanation
Correct option: B
Five
Option B (4) is correct because Indigofera, Lupin, Sesbania, and Trifollum are the only plants from the list that have zygomorphic flowers with either valvate or imbricate aestivation.
126
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Remembering
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Smallest angiosperm plant is?
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Correct option: A
Wolffia
Option A (Wolffia) is correct because Wolffia is the smallest angiosperm plant.
127
Medium
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Understanding
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Root is distinguishable from stem in
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct. Roots are distinguishable from stems by having root hairs, a root cap, and the absence of nodes and internodes.
128
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Understanding
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A fibrous root system is excellent for
View answer and explanation
Correct option: D
providing good anchorage for the plant
Option D is correct because a fibrous root system's extensive network provides excellent anchorage, preventing the plant from being easily uprooted.
129
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Understanding
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Roots are modified to perform physiological function in?
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Correct option: D
All of these
Option D is correct because all listed plants have roots modified for specific physiological functions.
130
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Application
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Each carpel of Gloriosa encloses 60 ovules, out
of which 27% became abortive and another
13% could not be fertilized due to various
reasons. How many seeds occur in the capsule
if all the remaining ovules are fertilized in the
lone flower of the plant?
of which 27% became abortive and another
13% could not be fertilized due to various
reasons. How many seeds occur in the capsule
if all the remaining ovules are fertilized in the
lone flower of the plant?
View answer and explanation
Correct option: C
108
Option C (108) is correct because it is the number of seeds calculated after accounting for the abortive and unfertilized ovules in the carpel.
131
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Analyzing
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How many of the following statements are correct?
a. In mustard, the primary roots and its branches constitute the tap root system.
b. Cells proximal to regions of elongation which contain differentiated cells possess root hairs.
c. In turnip, roots modify to get oxygen for respiration.
d. In Chrysanthemum, a lateral branch with short nodes and each internode bearing a rosette of leaves and a tuft of root is found.
a. In mustard, the primary roots and its branches constitute the tap root system.
b. Cells proximal to regions of elongation which contain differentiated cells possess root hairs.
c. In turnip, roots modify to get oxygen for respiration.
d. In Chrysanthemum, a lateral branch with short nodes and each internode bearing a rosette of leaves and a tuft of root is found.
View answer and explanation
Correct option: B
Two
Option B (Two) is correct because only two statements (a and d) are correct. Statement b is incorrect because root hairs are found in the maturation region, and statement c is incorrect because turnip is a storage root, not for respiration.
132
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Analyzing
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Statement I : Belladonna, ashwagandha and Muliathi are medicinal plant and they belong to family fabaceae.
Statement II : Petunia is the ornamental plant and belong to family solanacea.
In the light of the above statements, choose the correct answer from the options given below:
Statement II : Petunia is the ornamental plant and belong to family solanacea.
In the light of the above statements, choose the correct answer from the options given below:
View answer and explanation
Correct option: C
Statement I is incorrect but Statement II is correct
Option A (Capsicum, Datura) is correct because Capsicum has a number of locules half of its carpel number, and Datura has a number of locules double the number of carpels.
133
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Remembering
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Angiosperms differ from gymnosperms in
View answer and explanation
Correct option: B
Fruits
Option B (Fruits) is correct because angiosperms produce fruits, while gymnosperms do not.
134
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Understanding
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The stem is the …A… part of the axis bears branches, leaves, flowers and fruits. It develops from the …B… part of embryo of germinating seeds. Complete the given statement by choosing appropriate options for A and B
View answer and explanation
Correct option: C
A-ascending; B-plumule
Option C (A-ascending; B-plumule) is correct because the stem is the ascending part of the axis and develops from the plumule of the embryo.
135
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Understanding
+4 | -1
In a flowering plant, archesporium gives rise to
View answer and explanation
Correct option: D
Both wall and the sporogenous cells
Option D (Both wall and the sporogenous cells) is correct because the archesporium in a flowering plant gives rise to both the wall layers and the sporogenous cells within the sporangium.
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136
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Analyzing
+4 | -1
Select the incorrect statement(s) from the following:
(a) Citrus and Ricinus have synandrous condition.
(b) In epipetalous condition, the cohesion occurs between tepal and filament of stamen.
(c) Tetradynamous condition consists of two long and four short stamen filaments.
(a) Citrus and Ricinus have synandrous condition.
(b) In epipetalous condition, the cohesion occurs between tepal and filament of stamen.
(c) Tetradynamous condition consists of two long and four short stamen filaments.
View answer and explanation
Correct option: D
All above statements are incorrect
Option D (All above statements are incorrect) is correct because all the given statements about floral characteristics are factually wrong.
137
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Understanding
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Which one of the following families shoes both freedom and fusion in four successive whorls of the flower from exterior in different members?
View answer and explanation
Correct option: D
Liliaceae
Option D (Liliaceae) is correct because Liliaceae shows variation in freedom and fusion across its floral whorls in different members, particularly in the perianth and androecium.
138
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Remembering
+4 | -1
The leaves in Utricularia plant are modified into
View answer and explanation
Correct option: C
Bladders
Option C (Bladders) is correct because Utricularia plants have leaves modified into bladder-like structures to trap small organisms.
139
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Understanding
+4 | -1
Petiole
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because the petiole holds the leaf blade, allows it to flutter in the wind, and can help in cooling the leaf.
140
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Remembering
+4 | -1
Insectivore plants such as pitcher plant, venus fly trap have
View answer and explanation
Correct option: A
Modified leaf
Option A (Modified leaf) is correct because in insectivorous plants like pitcher plants and Venus flytraps, the leaves are modified to trap insects.
141
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Understanding
+4 | -1
Which one of the following statements are true? I.If the stem is joined with solid nodes and hollow internodes, it is called caudex. II.In Tridax, the stem is decumbent. III.Corm is a condensed from of rhizome growing more or less in vertical direction. IV.Sucker is an underground modification of stem. V.Biparous type of cymose branching is seen in Saraca.
View answer and explanation
Correct option: B
II and III
The correct answer is B (II and III) because in Tridax, the stem is decumbent, and a corm is a condensed form of a rhizome growing vertically.
142
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Remembering
+4 | -1
Identify from the following plant parts, the major contributors to human food?
View answer and explanation
Correct option: C
Fruits
Option C (Fruits) is correct because fruits and seeds derived from them are major contributors to human food supply.
143
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Understanding
+4 | -1
Aggregate fruit develops from
View answer and explanation
Correct option: A
Multicarpellary, apocarpous ovary
Option A (Multicarpellary, apocarpous ovary) is correct because aggregate fruits develop from flowers with multiple free carpels (apocarpous) in a single flower.
144
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Understanding
+4 | -1
Which one of the following floral characters, is shared by Ruscus and ray florets of Tridax?
View answer and explanation
Correct option: B
Unisexuality
Option B (Unisexuality) is correct because both Ruscus (a modified stem resembling leaves) and ray florets of Tridax (sunflower family) can exhibit unisexual flowers.
145
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Analyzing
+4 | -1
Which of the following modification is different than other three :
View answer and explanation
Correct option: C
Pea tendrils
Option C (Pea tendrils) is correct because pea tendrils are leaf modifications, while pumpkin, grapevine, and cucumber tendrils are stem modifications.
146
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Understanding
+4 | -1
Flower is always solitary when
View answer and explanation
Correct option: B
Shoot tip transforms into flower
Option B (Shoot tip transforms into flower) is correct because when the shoot tip transforms into a flower, it results in a solitary flower.
Revision notes and key takeaways
Review MORPHOLOGY OF FLOWERING PLANTS in your textbook or class notes, then use this set to check your understanding.
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