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NEET • BIOLOGY • PLANT KINGDOM
Plant kingdom practice · Medium
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61
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Remembering
+4 | -1
Which is the source of turpentine oil?
View answer and explanation
Correct option: A
Gymnospermic wood
Option A (Gymnospermic wood) is correct because turpentine oil is derived from the resin of coniferous trees, which are gymnosperms.
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Understanding
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Select the correct statement:
View answer and explanation
Correct option: C
Sequoia is one of the tallest trees
Option C (Sequoia is one of the tallest trees) is correct because Sequoia trees are known for their immense height.
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Understanding
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The moss plant is
View answer and explanation
Correct option: B
Predominantly gametophyte with sporophyte attached to it
Option B (Predominantly gametophyte with sporophyte attached to it) is correct because in mosses, the gametophyte is the dominant phase, and the sporophyte is dependent on it for nutrition.
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Remembering
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Cycas circinalis is a source of
View answer and explanation
Correct option: D
Starch
Option D (Starch) is correct because Cycas circinalis is a source of sago starch, which is extracted from its stem.
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Understanding
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In gymnosperms the dominate phase is …A… . They are heterosporous, produce …B… and …C… . Here, A, B and C refers to
View answer and explanation
Correct option: A
A-sporophyte, B-haploid microspores, C-haploid megaspores
Option A (A-sporophyte, B-haploid microspores, C-haploid megaspores) is correct. Gymnosperms have a dominant sporophyte phase and produce haploid microspores and megaspores through meiosis.
66
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Remembering
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In Selaginella the adaxial outgrowth from the base of leaf is called
View answer and explanation
Correct option: A
Ligule
Option A (Ligule) is correct because the ligule is a small, scale-like or tongue-shaped outgrowth found on the adaxial (upper) surface of the leaf base in Selaginella.
67
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Remembering
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In algae asexual reproduction occurs by the production of different types of spores. The most common type of spore is
View answer and explanation
Correct option: C
Zoospore
Option C (Zoospore) is correct because zoospores are the most common type of spore produced during asexual reproduction in algae, allowing for dispersal and colonization of new habitats.
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Remembering
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The spores in the moss plant are formed in
View answer and explanation
Correct option: C
Capsule
Option C (Capsule) is correct because in mosses, spores are produced within a structure called the capsule, which is part of the sporophyte generation.
69
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Understanding
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Which of the following statements is right?
View answer and explanation
Correct option: D
Heterocysts are found in Nostoc
Option D (Heterocysts are found in Nostoc) is correct because Nostoc, a cyanobacterium, contains heterocysts specialized for nitrogen fixation.
70
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Remembering
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Holdfast, stipe and frond constitutes the plant body in case of
View answer and explanation
Correct option: C
Laminaria
Option C (Laminaria) is correct because Laminaria, a brown alga, has a plant body differentiated into holdfast, stipe, and frond.
71
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Remembering
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Smallest flowering plant is
View answer and explanation
Correct option: B
Wolffia
Option B (Wolffia) is correct because Wolffia is the smallest flowering plant.
72
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Application
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How many of the given plants has/have archegonia and produce(s) seeds in their lifecycle? Marchantia, Cedrus, Ginkgo, Funaria, Pinus, Mustard, Sunflower
View answer and explanation
Correct option: B
Three
Option A (Two) is correct. Cedrus, Ginkgo and Pinus have archegonia and produce seeds.
73
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Understanding
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Assertion: Pyrenoids are utilised during
starvation.
Reason: Pyrenoids are proteinaceous bodies.
starvation.
Reason: Pyrenoids are proteinaceous bodies.
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 (If both Assertion and Reason are true but Reason is not the correct explanation of Assertion) is correct because pyrenoids are proteinaceous bodies that store starch, but their utilization during starvation is not directly explained by them being proteinaceous.
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Analyzing
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One of the following is not functionally analogous with others in the group
View answer and explanation
Correct option: C
Antheridium
Option D (Ovule) is correct because oogonium, archegonium, and antheridium are all reproductive structures that produce gametes, while the ovule is the structure that contains the female gamete and develops into a seed.
75
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Understanding
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Which of the following is correct for Cycas reproduction?
View answer and explanation
Correct option: B
Siphonogamy is followed by zooidogamy
Option D (Zooidogamy) is correct because Cycas exhibits zooidogamy, where motile sperm swim to the egg for fertilization. Siphonogamy is not followed by zooidogamy.
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Remembering
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Which of the following plant does not have Rhizobium containing root nodules?
View answer and explanation
Correct option: B
Pinus
Option B (Pinus) is correct because Pinus, a gymnosperm, forms mycorrhizal associations with fungi instead of Rhizobium-containing root nodules.
77
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Remembering
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Acetabularia is a
View answer and explanation
Correct option: A
Single-celled marine green alga
Option A (Single-celled marine green alga) is correct because Acetabularia is a large, single-celled green alga found in marine environments.
78
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Remembering
+4 | -1
Life cycle of Ectocarpus and Fucus respectively are
View answer and explanation
Correct option: C
Haplodiplontic, Diplontic
Option C (Haplodiplontic, Diplontic) is correct because Ectocarpus exhibits a haplodiplontic life cycle, while Fucus exhibits a diplontic life cycle.
79
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Remembering
+4 | -1
In gymnosperm the roots are generally
View answer and explanation
Correct option: C
Tap root
Option C (Tap root) is correct because gymnosperms typically have a well-developed tap root system for anchorage and water absorption.
80
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Remembering
+4 | -1
Which of the following is /are grouped under phanerogams?
View answer and explanation
Correct option: D
Both (a) and (b)
Option D (Both (a) and (b)) is correct because both angiosperms and gymnosperms are seed-bearing plants and are therefore grouped under phanerogams.
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Remembering
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In Chlorophyceae, the mode of sexual reproduction is
View answer and explanation
Correct option: D
All of these
Option D is correct because Chlorophyceae (green algae) exhibit all three types of sexual reproduction: isogamy, anisogamy, and oogamy.
82
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Analyzing
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Identify the mismatched pair.
View answer and explanation
Correct option: C
Fucus - Floridean starch
Option C is the mismatched pair because Fucus is a brown alga and stores food as laminarin and mannitol, not floridean starch which is characteristic of red algae.
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Remembering
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Pinus belong to the class
View answer and explanation
Correct option: C
Coniferopsida
Option C is correct because Pinus belongs to the class Coniferopsida, which includes cone-bearing gymnosperms.
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Understanding
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Mosses occur in moist place because
View answer and explanation
Correct option: B
Their gamete fuses in water
Option B is correct because mosses require water for fertilization as their motile sperm (antherozoids) need water to swim to the egg (archegonium).
85
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Analyzing
+4 | -1
Consider the following statements
I. Hydropterides are only plant among the heterosporous pteridophytes that are leptosporangiate
II. Heterosporous pteridophytes were the first land flora of earth
III. The difference in size between microspore and megaspore in Seleginella kraussiana is 1:200
IV. Female gametophyte of Seleginella mostly have single archenogium
Which of the above statement are correct?
I. Hydropterides are only plant among the heterosporous pteridophytes that are leptosporangiate
II. Heterosporous pteridophytes were the first land flora of earth
III. The difference in size between microspore and megaspore in Seleginella kraussiana is 1:200
IV. Female gametophyte of Seleginella mostly have single archenogium
Which of the above statement are correct?
View answer and explanation
Correct option: C
I, II and IV
Option C is correct because statements I, II, and IV are accurate descriptions of heterosporous pteridophytes and Selaginella.
86
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Understanding
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In a moss, the sporophyte
View answer and explanation
Correct option: A
Is partially parasitic on the gametophyte
Option A (Is partially parasitic on the gametophyte) is correct because the sporophyte in mosses depends on the gametophyte for nutrition.
87
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Understanding
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In comparition to pteridophyte, which one of the following algae exhibits diplontic life cycle?
View answer and explanation
Correct option: D
Focus
Option D (Focus) is correct because Focus (a brown alga) exhibits a diplontic life cycle, similar to seed-bearing plants.
88
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Remembering
+4 | -1
In comparition to angiosperm, which one of the following algae exhibits haplo-diplontic life cycle
View answer and explanation
Correct option: C
Ectocarpus
Option C is correct because Ectocarpus, a brown alga, exhibits a haplo-diplontic life cycle, which is intermediate between the haplontic and diplontic life cycles seen in Volvox/Chlamydomonas and Fucus, respectively.
89
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Understanding
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Which one of the following formed in Spirogyra is different based on its nucleus?
View answer and explanation
Correct option: A
Zygospore
Option A (Zygospore) is correct because a zygospore is formed by the fusion of two gametes, involving the fusion of their nuclei, whereas an azygospore develops from a single cell without nuclear fusion.
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Understanding
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Assertion: Double fertilization is unique to angiosperms
Reason: Triple fusion is unique character of angiosperms
Reason: Triple fusion is unique character of angiosperms
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A (Both A and R are true and R is the correct explanation of A) is correct because double fertilization is indeed unique to angiosperms, and triple fusion, which is part of double fertilization, is the reason why.
Revision notes and key takeaways
Review PLANT KINGDOM in your textbook or class notes, then use this set to check your understanding.
Showing 61-90 of 181 questions