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NEET • BIOLOGY • BIOLOGICAL CLASSIFICATION
Biological classification practice · Mixed difficulty
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181
Hard
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Understanding
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Which of the following statements is true according to the concept of biological classification?
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Correct option: C
Kingdom Fungi includes eukaryotic, multicellular heterotrophic organisms which exhibit both
sexual as well as asexual modes of reproduction and have a great range of diversity.
sexual as well as asexual modes of reproduction and have a great range of diversity.
Option C (Kingdom Fungi includes eukaryotic, multicellular heterotrophic organisms which exhibit both sexual as well as asexual modes of reproduction and have a great range of diversity) is correct because it accurately describes the characteristics of Kingdom Fungi.
182
Medium
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Analyzing
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A pathogen accumulates its secretion in the
xylem vessels of a plant, whose seed epidermal
hairs are of great economic importance.
Identify the pathogen.
xylem vessels of a plant, whose seed epidermal
hairs are of great economic importance.
Identify the pathogen.
View answer and explanation
Correct option: A
Fusarium oxysporum
Fusarium oxysporum is the correct answer because it is a xylem-inhabiting pathogen that can affect plants with economically important seed epidermal hairs (e.g., cotton).
183
Medium
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Remembering
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The plant cell have an eukaryotic structure with prominent …A… and cell wall is made up of …B…. Identify the correct options for A and B to complete the given statement
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Correct option: A
A-chloroplast; B-cellulose
Option A (A-chloroplast; B-cellulose) is correct because plant cells have a eukaryotic structure with prominent chloroplasts, and their cell wall is made up of cellulose.
184
Easy
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Understanding
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Under unfavourable conditions bacteria reproduce through?
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Correct option: C
Endospore Formation
Option C (Endospore Formation) is correct because bacteria form endospores to survive harsh conditions.
185
Medium
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Remembering
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In Basidiomycetes, the vegetative reproduction takes place by
View answer and explanation
Correct option: D
Fragmentation
Option D (Fragmentation) is correct because vegetative reproduction in Basidiomycetes commonly occurs through fragmentation of the mycelium.
186
Easy
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Understanding
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Heterotrophic bacteria are dependent on other organism for
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Correct option: B
Nutrition
Option B (Nutrition) is correct because heterotrophic bacteria rely on other organisms for their source of organic carbon and energy, which is related to nutrition.
187
Hard
187 of 234
Remembering
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Ray fungi (or) Actinomycetes belong to?
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Correct option: C
Monera
Option C (Monera) is correct because Actinomycetes, also known as ray fungi, are bacteria and belong to the Kingdom Monera.
188
Medium
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Understanding
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Regarding sexual reproduction in fungi. Which of the following statement is correct?
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Correct option: A
Plasmogamy followed by karyogamy
Option A (Plasmogamy followed by karyogamy) is correct because it represents the correct sequence of events in fungal sexual reproduction.
189
Hard
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Remembering
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Slimy mass of protoplasm with many nuclei and an Amoeba-like thalloid body is a characteristic feature of
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Correct option: D
Myxomycetes
Option D (Myxomycetes) is correct because Myxomycetes (slime molds) are characterized by a multinucleate, amoeba-like thalloid body called a plasmodium.
190
Medium
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Remembering
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The smallest free-living organism is
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Correct option: B
Mycoplasma
Option B (Mycoplasma) is correct because Mycoplasmas are the smallest known free-living organisms, lacking a cell wall.
191
Medium
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Remembering
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Slime moulds are dependent on
View answer and explanation
Correct option: B
Dead and decaying organic matter
The correct answer is B (Dead and decaying organic matter) because slime molds are saprophytic organisms that feed on dead and decaying organic matter.
192
Medium
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Analyzing
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Organisms having cellular body organisation and with ability to oxidise various inorganic substances and use the released energy for their ATP production are
A. Nitrifying bacteria of Kingdom Monera in Linnaeus's system.
B. Sulphur bacteria belonging to Kingdom Protista in Haeckel's system.
C. Holophytic protistans.
D. Non-pigmented iron bacteria of Kingdom Monera in Whittaker's system.
A. Nitrifying bacteria of Kingdom Monera in Linnaeus's system.
B. Sulphur bacteria belonging to Kingdom Protista in Haeckel's system.
C. Holophytic protistans.
D. Non-pigmented iron bacteria of Kingdom Monera in Whittaker's system.
View answer and explanation
Correct option: D
B and D are correct
Option D (B and D are correct) is correct because sulphur bacteria in Kingdom Protista (Haeckel's system) and non-pigmented iron bacteria in Kingdom Monera (Whittaker's system) can oxidize inorganic substances for ATP production.
193
Medium
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Understanding
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Limitations of two kingdom classification is?
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Correct option: D
All of these
Option D (All of these) is correct because the two-kingdom classification failed to differentiate between unicellular and multicellular organisms, photosynthetic and non-photosynthetic organisms, and prokaryotic and eukaryotic cells.
194
Medium
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Understanding
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Consider the following statements
I. Biological classification is the scientific ordering of organisms in a hierarchial series of groups on the basis of their relationships, i.e., morphological, evolutionary and others
II. Whittaker classified organisms on the basis of autotrophic and heterotrophic mode of nutrition
III. In five kingdom system of classification, living organisms can be divided into prokaryotic and eukaryotic cells on the basis of cell structure
Which of the statements given above are correct?
I. Biological classification is the scientific ordering of organisms in a hierarchial series of groups on the basis of their relationships, i.e., morphological, evolutionary and others
II. Whittaker classified organisms on the basis of autotrophic and heterotrophic mode of nutrition
III. In five kingdom system of classification, living organisms can be divided into prokaryotic and eukaryotic cells on the basis of cell structure
Which of the statements given above are correct?
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Correct option: D
I, II and III
Option D (I, II and III) is correct because all three statements accurately describe biological classification, Whittaker's criteria, and the division of organisms based on cell structure.
195
Easy
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Understanding
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Which is correct?
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Correct option: D
Some virus has RNA as genetic material
Option D (Some virus has RNA as genetic material) is correct because some viruses, like retroviruses, use RNA as their genetic material.
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196
Hard
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Analyzing
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Select the incorrect match from the given option.
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Correct option: A
Occurrence of dikaryotic stage – Ascomycetes and basidiomycetes
Option B is incorrect. Saprophytes are heterotrophic, not autotrophic, and they absorb soluble organic matter from dead substrates.
197
Medium
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Analyzing
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Select incorrect matching
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Correct option: D
Thermoacidophiles - Heterotrophs and pathogenic
Option D (Thermoacidophiles - Heterotrophs and pathogenic) is the incorrect matching because while some thermoacidophiles can be heterotrophic, they are not all pathogenic.
198
Medium
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Remembering
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Identify from the following examples, a fungus, which is of medicinal importance
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Correct option: C
Penicillium
Option C (Penicillium) is correct because Penicillium is used to produce the antibiotic penicillin, making it of medicinal importance.
199
Hard
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Understanding
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Which of the following statement(s) is/are correct about ascomycetes?
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.
View answer and explanation
Correct option: C
(i), (iii) and (iv)
Option C ((i), (iii) and (iv)) is correct because it accurately describes the characteristics and examples of ascomycetes, while statement (ii) contains an error regarding unicellularity.
200
Medium
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Thermococcus,Methanococcus and Methanobacterium are
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Correct option: C
Archaebacteria with negatively supercoiled DNA as eukaryotes but lacking histones
Option C (Archaebacteria with negatively supercoiled DNA as eukaryotes but lacking histones) is correct because these organisms are Archaebacteria, have negatively supercoiled DNA, and lack histones.
201
Hard
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Understanding
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Statement I: Aristotle was the first to attempt biological classification based on physiological attributes of the organisms.
Statement II: Linnaeus classified all organisms into five kingdoms.
Statement II: Linnaeus classified all organisms into five kingdoms.
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Correct option: B
Both statement I and II are incorrect
Option B (Both statement I and II are incorrect) is correct because Aristotle's classification was based on simple morphological characters, not physiological attributes, and Linnaeus classified organisms into two kingdoms, not five.
202
Medium
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Remembering
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Viruses contain
View answer and explanation
Correct option: C
Either DNA or RNA
Option C (Either DNA or RNA) is correct because viruses contain either DNA or RNA as their genetic material, but not both.
203
Hard
203 of 234
Understanding
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Protistan genome has
View answer and explanation
Correct option: D
Membrane-bound nucleoproteins embedded in cytoplasm
Option D (Membrane-bound nucleoproteins embedded in cytoplasm) is correct because protists are eukaryotes, possessing a membrane-bound nucleus.
204
Hard
204 of 234
Remembering
+4 | -1
Red sea is red colour due to presence?
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Correct option: A
Trichodesmium
Option A (Trichodesmium) is correct because Trichodesmium is a cyanobacterium that contains the pigment phycoerythrin, which gives the Red Sea its reddish color during blooms.
205
Easy
205 of 234
Remembering
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Dikaryophase of fungus occurs in
View answer and explanation
Correct option: A
Ascomycetes and Basidiomycetes
Option A (Ascomycetes and Basidiomycetes) is correct because dikaryophase is a characteristic feature of these two classes of fungi.
206
Medium
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Understanding
+4 | -1
Which of the following statement is correct?
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Correct option: A
Viruses are obligate parasites
Option A (Viruses are obligate parasites) is correct because viruses can only replicate inside a host cell, making them obligate parasites.
207
Medium
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Understanding
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Which is false for nutrition in Amoeba?
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Correct option: D
Photoautotroph
Option D (Photoautotroph) is correct because Amoeba is heterotrophic and obtains nutrition by holozoic nutrition, not by photosynthesis.
208
Medium
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Analyzing
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Identify the odd one out from the given options.
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Correct option: A
Ustilago
Ustilago is the odd one out because it belongs to Basidiomycetes, while the others are Deuteromycetes.
209
Medium
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Understanding
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A place was rocky and barren but now there is a green forest, the sequence of origin is
View answer and explanation
Correct option: A
Lichen, moss, herbs, shrubs
Option A (Lichen, moss, herbs, shrubs) is correct because lichens are pioneer species that break down rock, followed by mosses, then herbs, and finally shrubs in ecological succession.
210
Hard
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Understanding
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Which of the following is true regarding the phage lambda, a virus which infects bacteria?
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Correct option: B
In the lysogenic cycle, the bacterial host replicates viral DNA, passing it onto daughter cells during binary fission
Option B (In the lysogenic cycle, the bacterial host replicates viral DNA, passing it onto daughter cells during binary fission) is correct because in the lysogenic cycle, the viral DNA integrates into the host's genome and is replicated along with the host's DNA during cell division.
Revision notes and key takeaways
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Showing 181-210 of 234 questions