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NEET • BIOLOGY • BIOLOGICAL CLASSIFICATION
Biological classification practice · Mixed difficulty
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121
Easy
121 of 234
Understanding
+4 | -1
Pick the correct statement?
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because all the statements about tissue grade, cell walls, and heterotrophic nutrition are accurate.
122
Easy
122 of 234
Understanding
+4 | -1
Viruses are no more ‘alive’ than isolated chromosomes because
View answer and explanation
Correct option: B
Both require the environment of a cell to replicate
Option B (Both require the environment of a cell to replicate) is correct because viruses and isolated chromosomes both need a cellular environment to replicate their genetic material.
123
Hard
123 of 234
Remembering
+4 | -1
In which genera, endospores are formed for reproduction?
View answer and explanation
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.
124
Easy
124 of 234
Remembering
+4 | -1
African sleeping sickness is caused by
View answer and explanation
Correct option: A
Trypanosoma
Option A (Trypanosoma) is correct because African sleeping sickness is caused by the protozoan parasite Trypanosoma brucei, transmitted by the tsetse fly.
125
Easy
125 of 234
Remembering
+4 | -1
Which of the following is a free living nitrogen fixing bacterium present in the soil?
View answer and explanation
Correct option: C
Azotobacter
Azotobacter is a free-living nitrogen-fixing bacterium present in the soil.
126
Medium
126 of 234
Analyzing
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Assertion: Euglena cannot be classified on the
basis of two kingdom system.
Reason: Euglena is a plant due to presence of
chlorophyll.
basis of two kingdom system.
Reason: Euglena is a plant due to presence of
chlorophyll.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
The assertion is true, but the reason is false. Euglena's classification is complex, but it's not *just* because of chlorophyll.
127
Easy
127 of 234
Understanding
+4 | -1
Read the given statements and select the correct option.
Statement A: Monerans are most primitive organisms
Statement B: Monerans include only Bacteria
Statement A: Monerans are most primitive organisms
Statement B: Monerans include only Bacteria
View answer and explanation
Correct option: C
Both statements are correct
Option C (Both statements are correct) is correct because Monerans are indeed the most primitive organisms and exclusively include Bacteria.
128
Medium
128 of 234
Remembering
+4 | -1
Five Kingdom System of classification suggested by R.H. Whittaker is not based on
View answer and explanation
Correct option: A
Absence of a well defined nucleus
Option A (Absence of a well defined nucleus) is correct because Whittaker's classification was based on cell structure complexity, mode of nutrition, reproduction, and phylogenetic relationships, not solely on the absence of a nucleus.
129
Easy
129 of 234
Understanding
+4 | -1
A single cell performing all physiological activities is observed in?
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because Monera, Protista, and Yeast (a fungus) can all perform all physiological activities within a single cell.
130
Medium
130 of 234
Remembering
+4 | -1
Contagium vivum fluidum concept of virus was proposed by
View answer and explanation
Correct option: B
MW Beijerinck
Option B (MW Beijerinck) is correct because he proposed the 'Contagium vivum fluidum' concept.
131
Medium
131 of 234
Remembering
+4 | -1
The disease caused by Trypanosoma is
View answer and explanation
Correct option: B
Sleeping sickness
The correct answer is B (Sleeping sickness) because Trypanosoma is a protozoan parasite that causes African sleeping sickness.
132
Medium
132 of 234
Understanding
+4 | -1
State whether the given statements are true or false
I. Bacteria shows both autotrophic and heterotrophic nutrition
II. Some of the bacteria are autotrophic. They may be photosynthetic autotrophic or chemosynthetic autotrophic
III. Heterotrophic nutrition involves the obtaining of readymade organic nutrients from outside sources
I. Bacteria shows both autotrophic and heterotrophic nutrition
II. Some of the bacteria are autotrophic. They may be photosynthetic autotrophic or chemosynthetic autotrophic
III. Heterotrophic nutrition involves the obtaining of readymade organic nutrients from outside sources
View answer and explanation
Correct option: C
I, II and III are true
Option C (I, II and III are true) is correct because all three statements accurately describe bacterial nutrition.
133
Medium
133 of 234
Understanding
+4 | -1
In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statement is true about archaea?
View answer and explanation
Correct option: B
Archaea have some noble features that are absent in other prokaryotes and eukaryotes
Option B (Archaea have some noble features that are absent in other prokaryotes and eukaryotes) is correct because archaea possess unique characteristics not found in other prokaryotes or eukaryotes.
134
Hard
134 of 234
Understanding
+4 | -1
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.
135
Hard
135 of 234
Remembering
+4 | -1
Malarial parasite is belongs to?
View answer and explanation
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.
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136
Easy
136 of 234
Understanding
+4 | -1
Which of the following statements regarding Kingdom Plantae is correct?
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because Kingdom Plantae includes all eukaryotic chlorophyll-containing organisms, some members are partially heterotrophic, and their cell wall is made of cellulose.
137
Easy
137 of 234
Remembering
+4 | -1
Fungi are classified on the basis of
View answer and explanation
Correct option: A
Sexual reproduction
Option A (Sexual reproduction) is the correct answer because fungi are primarily classified based on the type of sexual spores they produce and the structures involved in sexual reproduction.
138
Hard
138 of 234
Remembering
+4 | -1
Mastigophora is also known as which one of the following.
View answer and explanation
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.
139
Hard
139 of 234
Remembering
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In Deuteromycetes, the mycelium is
View answer and explanation
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.
140
Easy
140 of 234
Understanding
+4 | -1
Halophiles differ from eubacteria in
View answer and explanation
Correct option: D
More than one option is correct
Option D (More than one option is correct) is correct because Halophiles differ from eubacteria in having different cell wall and cell membrane structures and they survive in extreme conditions.
141
Medium
141 of 234
Analyzing
+4 | -1
The following is comparable to a professional
dinner guest
dinner guest
View answer and explanation
Correct option: C
Parasite
Option C is correct because a parasite, like a professional dinner guest, benefits at the expense of the host.
142
Medium
142 of 234
Analyzing
+4 | -1
Find the odd one w.r.t. the fungi imperfecti
View answer and explanation
Correct option: D
Penicillium
Penicillium is the odd one out because it is classified under Ascomycetes, while the others are Deuteromycetes.
143
Medium
143 of 234
Remembering
+4 | -1
Viroids have
View answer and explanation
Correct option: A
ssRNA not enclosed by protein coat
Option A (ssRNA not enclosed by protein coat) is correct because viroids are characterized by having a single-stranded RNA molecule without a protein coat.
144
Medium
144 of 234
Remembering
+4 | -1
Which is the only kingdom occupied by BGA, nitrogen fixing bacteria and methanogenic bacteria in five kingdom classification?
View answer and explanation
Correct option: C
Monera
The correct answer is C (Monera) because BGA (blue-green algae), nitrogen-fixing bacteria, and methanogenic bacteria are all prokaryotes, which are classified under the Kingdom Monera.
145
Medium
145 of 234
Analyzing
+4 | -1
Select the wrong match.
View answer and explanation
Correct option: D
Red tide causing organism - Can fix as well as
Option D is the wrong match because while red tide causing organisms (dinoflagellates) can fix CO2, they are not typically known for fixing N2.
146
Easy
146 of 234
Understanding
+4 | -1
Amoeboid protozoans
I. live in freshwater, sea water or moist soil
II. has pseudopodia for locomotion and capturing prey
III. have silica shells on their surface in marine forms
Which of the statements given above are correct?
I. live in freshwater, sea water or moist soil
II. has pseudopodia for locomotion and capturing prey
III. have silica shells on their surface in marine forms
Which of the statements given above are correct?
View answer and explanation
Correct option: D
I, II and III
Option D (I, II and III) is correct because all three statements accurately describe Amoeboid protozoans.
147
Hard
147 of 234
Understanding
+4 | -1
Mark the correctly matched option among the following.
View answer and explanation
Correct option: D
Saprophytic - Slime mould and Fungi
Option D is correct because slime molds are saprophytic protists, and fungi are also saprophytic organisms.
148
Hard
148 of 234
Analyzing
+4 | -1
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.
149
Hard
149 of 234
Understanding
+4 | -1
Nitrifying bacteria are able to
View answer and explanation
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.
150
Medium
150 of 234
Remembering
+4 | -1
Which of the following is not a character of Protista?
View answer and explanation
Correct option: A
Protists are prokaryotic
Option A (Protists are prokaryotic) is correct because protists are eukaryotic, not prokaryotic.
Revision notes and key takeaways
Review BIOLOGICAL CLASSIFICATION in your textbook or class notes, then use this set to check your understanding.
Showing 121-150 of 234 questions