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NEET • BIOLOGY • BIOLOGICAL CLASSIFICATION
Biological classification practice · Hard
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31
Hard
31 of 64
Remembering
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Which one among the following is a parasite with ‘spore like stage’ in its life cycle?
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Correct option: A
Plasmodium
The correct answer is A (Plasmodium) because Plasmodium is a parasitic protozoan with a spore-like stage (sporozoite) in its life cycle, causing malaria.
32
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[A]: Unicellular organisms are found in 3 kingdoms.
[R]: These kingdoms are prokaryotic.
[R]: These kingdoms are prokaryotic.
View answer and explanation
Correct option: C
A is true but R is false
Option C (A is true but R is false) is correct because unicellular organisms are found in 3 kingdoms (Monera, Protista, and Fungi), but these kingdoms are not all prokaryotic; Protista and Fungi contain eukaryotic unicellular organisms.
33
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In which genera, endospores are formed for reproduction?
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Correct option: B
Bacillus and Clostridium
Option B (Bacillus and Clostridium) is correct because Bacillus and Clostridium are well-known genera of bacteria that form endospores.
34
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Assertion (A): Lichens are very good pollution indicators.
Reason (R): Lichens grow in polluted areas.
Reason (R): Lichens grow in polluted areas.
View answer and explanation
Correct option: C
A is true, R is false
Option C (A is true, R is false) is correct because lichens are sensitive to pollution and do not grow in polluted areas, making them good indicators of clean air.
35
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Remembering
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Malarial parasite is belongs to?
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Correct option: A
Sporozoans
Option A (Sporozoans) is correct because the malarial parasite, Plasmodium, belongs to the group Sporozoa, characterized by spore-forming parasitic protozoans.
36
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Remembering
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Mastigophora is also known as which one of the following.
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Correct option: A
Flagellata
Option A (Flagellata) is correct because Mastigophora is another name for the group of protozoans known as Flagellata, characterized by the presence of flagella for locomotion.
37
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In Deuteromycetes, the mycelium is
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Correct option: A
Septate and branched
Option A (Septate and branched) is correct because Deuteromycetes typically have septate (divided by cross-walls) and branched mycelium.
38
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Understanding
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Mark the correctly matched option among the following.
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Correct option: D
Saprophytic - Slime mould and Fungi
Option D is correct because slime molds are saprophytic protists, and fungi are also saprophytic organisms.
39
Hard
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Analyzing
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Identify combination of incorrect statements
related to cyanobacteria.
I. Cyanobacteria are referred to as blue-green algae
II. They perform oxygenic photosynthesis in
chloroplasts
III. The red- colour of red-sea is due to the
presence of a cyanobacterial species
Trichodesmium erythraeum
IV. All the cyanobacterial species can fix
atmospheric in specialised cells called
heterocysts.
related to cyanobacteria.
I. Cyanobacteria are referred to as blue-green algae
II. They perform oxygenic photosynthesis in
chloroplasts
III. The red- colour of red-sea is due to the
presence of a cyanobacterial species
Trichodesmium erythraeum
IV. All the cyanobacterial species can fix
atmospheric in specialised cells called
heterocysts.
View answer and explanation
Correct option: C
II, IV
Option C (II, IV) is correct because cyanobacteria perform oxygenic photosynthesis in thylakoids (not chloroplasts) and not all cyanobacteria can fix atmospheric in heterocysts.
40
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Nitrifying bacteria are able to
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Correct option: B
Convert ammonia to nitrate
Option B (Convert ammonia to nitrate) is correct because nitrifying bacteria are responsible for this conversion in the nitrogen cycle.
41
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Assertion (A): Viruses did not find a place in classification.
Reason (R): They are not truly living.
Reason (R): They are not truly living.
View answer and explanation
Correct option: A
Both A and R are correct, R is the correct explanation of A
Option A (Both A and R are correct, R is the correct explanation of A) is correct because viruses are not classified due to their non-living characteristics outside a host cell.
42
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Substances secreted by bacteria are
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Correct option: B
Toxins
Option B (Toxins) is correct because bacteria secrete various substances, including toxins, which can be harmful to the host.
43
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Remembering
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Which of the following group of diseases is caused by viruses?
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Correct option: A
Mumps, smallpox, herpes, influenza
Option A (Mumps, smallpox, herpes, influenza) is correct because all these diseases are caused by viruses.
44
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Understanding
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Consider the following statements about class-Phycomycetes? I. Member may be obligate parasite on plants II. The mycelium is aseptate and coenocytic III. Asexual reproduction involves the formation of spore containing sac or sporangia. In aquatic conditions, the sporangia produces zoospores 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 characteristics of Phycomycetes.
45
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Remembering
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Which of the following combinations of characters is true for slime moulds?
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Correct option: D
Saprophytic, plasmodium without walls, spores dispersed by air currents
The correct answer is D (Saprophytic, plasmodium without walls, spores dispersed by air currents) because slime molds are saprophytic, their plasmodium lacks cell walls, and their spores are dispersed by air.
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46
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46 of 64
Understanding
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Enveloped virus enters into host cells by
View answer and explanation
Correct option: D
Fusion with the plasma membrane of host
Option D (Fusion with the plasma membrane of host) is correct because enveloped viruses enter host cells by fusing their envelope with the host cell's plasma membrane, releasing the viral contents inside.
47
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Remembering
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All are the viral diseases except
View answer and explanation
Correct option: D
Anthrax
Option D (Anthrax) is correct because anthrax is caused by bacteria, not a virus.
48
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Understanding
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[A]: Unicellular organisms occur in 3 kingdoms.
[R]: Multicellular organisms also occur in 3 kingdoms.
[R]: Multicellular organisms also occur in 3 kingdoms.
View answer and explanation
Correct option: B
Both A and R are true and R is not the correct explanation of A
Option B (Both A and R are true and R is not the correct explanation of A) is correct because unicellular organisms occur in 3 kingdoms (Monera, Protista, and some Fungi) and multicellular organisms also occur in 3 kingdoms (Fungi, Plantae, and Animalia), but the reason does not explain the assertion.
49
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Understanding
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Some bacteria utilises inorganic substances like nitrate, nitrite, ammonia, etc., for the oxidation and release of energy for ATP production. These are known as
View answer and explanation
Correct option: B
Chemosynthetic autotrophic bacteria
Option B (Chemosynthetic autotrophic bacteria) is correct because they derive energy from oxidizing inorganic substances.
50
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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.
51
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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.
52
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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
View answer and explanation
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.
53
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Analyzing
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Select the incorrect match from the given option.
View answer and explanation
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.
54
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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.
55
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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.
View answer and explanation
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.
56
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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.
57
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Remembering
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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.
58
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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.
59
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59 of 64
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Lichen are mutualistic and have symbiotic associations between
View answer and explanation
Correct option: B
Fungi and algae
Option B (Fungi and algae) is correct because lichens are a symbiotic association between fungi and algae.
60
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[A]: Kingdom Archaea is a domain.
[R]: Domain is a category above kingdom.
[R]: Domain is a category above kingdom.
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 Archaea is a domain, and a domain is a taxonomic category above the kingdom level.
Revision notes and key takeaways
Review BIOLOGICAL CLASSIFICATION in your textbook or class notes, then use this set to check your understanding.
Showing 31-60 of 64 questions