-
question_answer1)
Gram-negative cells stain pink because:
A)
they have specialised lipids in their cell walls. done
clear
B)
their peptidoglycan layer is thin. done
clear
C)
their peptidoglycan layer is thick. done
clear
D)
they are receptive to antibiotics. done
clear
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question_answer2)
The given figure represent a type of virus with two parts labelled as 1 and 2. Identify the virus and the labelled parts.
A)
1-R2NA 2-Capsid Virus -Tobacco Mosaic Virus done
clear
B)
1-DNA 2-Capsid Virus -Tobacco Mosaic Virus done
clear
C)
1-RNA 2-Lipid Virus -Tobacco Mosaic Virus done
clear
D)
1-RNA 2-Protein Virus -HIV done
clear
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question_answer3)
Which of the following regarding protists, in general, is false?
A)
Protists are always parasitic. done
clear
B)
Protists are single-celled. done
clear
C)
Protists are heterotrophic. done
clear
D)
All of the above done
clear
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question_answer4)
An organism having cytoplasm, DNA and RNA but no cell wall is:
A)
Cyanobacterium done
clear
B)
Mycoplasma done
clear
C)
Bacterium done
clear
D)
Virus done
clear
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question_answer5)
Most of the antibiotics have no effect on viruses because:
A)
they kill all bacteria which form host of virus. done
clear
B)
viruses are too small in size for antibiotics to act on them. done
clear
C)
viruses have no metabolism of their own. done
clear
D)
viruses produce a thick covering and endospores. done
clear
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question_answer6)
During the evolution of eukaryotes from prokaryotes, which of the following did not occur?
A)
Infolding of the flexible cell membrane. done
clear
B)
Loss of the cell wall. done
clear
C)
A switch from aerobic to anaerobic metabolism. done
clear
D)
Endosymbiosis of once free-living prokaryotes. done
clear
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question_answer7)
Match the following columns.
| Column - I | | Column - II |
A. | Rod-shaped | I. | Coccus |
B. | Spherical | II. | Bacillus |
C. | Spiral-shaped | III. | Vibrio |
D. | Comma-shaped | IV. | Spirrillum |
A)
A-III B-II C-I D-IV done
clear
B)
A-IV B-III C-II D-I done
clear
C)
A-II B-I C-IV D-III done
clear
D)
A-I B-IV C-III D-II done
clear
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question_answer8)
A tooth scraping yields large numbers of corkscrew shaped bacteria. These bacteria are referred to as:
A)
Bacilli done
clear
B)
Cocci done
clear
C)
Spirilli done
clear
D)
Helici done
clear
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question_answer9)
The bacterium Bacillus thuringiensis can withstand heating, dryness, and toxic chemicals that would kill most other bacteria. This indicates that it is probably able to form:
A)
Pseudopodia done
clear
B)
Endotoxins done
clear
C)
Endospores done
clear
D)
Pili done
clear
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question_answer10)
Which of the following facts differentiates the plant virus from other viruses?
A)
DNA is the genetic material done
clear
B)
Obligate parasites done
clear
C)
RNA is the genetic material done
clear
D)
Nucleo-protein nature done
clear
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question_answer11)
Which of the following does not contain chlorophyll?
A)
Fungi done
clear
B)
Algae done
clear
C)
Bryophyta done
clear
D)
Pteridophyta done
clear
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question_answer12)
Pseudomycelium is a characteristic feature of:
A)
Mushroom done
clear
B)
Mucor done
clear
C)
Bread mould done
clear
D)
Yeast done
clear
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question_answer13)
Match the type of protozoans given in column-I with their examples given in column-II and choose the correct option.
| Column-I (Type of Protozoans) | | Column-II (Examples) |
A. | Amoeboid protozoans | I. | Paramoecium |
B. | Ciliated protozoans | II. | Plasmodium |
C. | Flagellated protozoans | III. | Amoeba |
D. | Sporozoans | IV. | Trypanosoma |
A)
A-I B-III C-IV D-II done
clear
B)
A-III B-I C-II D-IV done
clear
C)
A-III B-I C-IV D-II done
clear
D)
A-III B-IV C-I D-II done
clear
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question_answer14)
Read the following statements and answer the question given below. |
(i) They are saprophytic protists. |
(ii) Under suitable conditions, they form an aggregation (called plasmodium) which may grow and spread over several feet. |
(iii) During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips. |
Which of the following class of protists is being described by the above statements?
A)
Euglenoids done
clear
B)
Dinoflagellates done
clear
C)
Slime moulds done
clear
D)
Protozoans done
clear
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question_answer15)
Consider the below statements and identify the correct statements regarding classification. |
(i) Biological classification is the scientific ordering of organisms in a hierarchical 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. |
A)
(i), (ii) and (iii) done
clear
B)
(i) and (iii) done
clear
C)
(ii) and (iii) done
clear
D)
(i) and (ii) done
clear
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question_answer16)
Match column-I with column-II and select the correct answer using the codes given below.
| Column-I (Fungus name) | | Column-II (Commonly called) |
A. | Puccinia | I. | Yeast |
B. | Ustilago | II. | Mushroom |
C. | Agaricus | III. | Smut fungus |
D. | Saccharomyces | IV. | Rust fungus |
A)
A-I B-II C-III D-IV done
clear
B)
A-II B-III C-IV D-I done
clear
C)
A-III B-IV C-I D-II done
clear
D)
A-IV B-III C-II D-I done
clear
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question_answer17)
Antibiotics are mostly obtained from:
A)
Bacteria done
clear
B)
Viruses done
clear
C)
Angiosperms done
clear
D)
Fungi done
clear
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question_answer18)
Identify the following figures.
A)
A - Euglena, B - Paramoecium, C - Agaricus done
clear
B)
A - Euglena, B - Planaria, C - Agaricus done
clear
C)
A - Planaria, B - Paramoecium, C - Agaricus done
clear
D)
A - Euglemi, B - Paramoecium, C - Aspergillus done
clear
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question_answer19)
Bacteria were regarded to be plants because:
A)
some of them are green. done
clear
B)
they are present everywhere. done
clear
C)
some of them cannot move. done
clear
D)
they have a rigid cell wall. done
clear
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question_answer20)
Locomotory structures are absent in:
A)
Sporozoans done
clear
B)
Ciliates done
clear
C)
Zooflagellates done
clear
D)
Rhizopods done
clear
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question_answer21)
Which of the following are the characters of Dinoflagellates? |
(i) Planktonic golden yellow algae with soap box like structure. |
(ii) Marine red biflagellated protista. |
(iii) Appear yellow, green, brown, blue and red in colour. |
(iv) Biflagellated organisms with pellicle. |
(v) Saprophytic or parasitic unicellular forms. |
A)
(i), (ii) and (iii) only done
clear
B)
(ii), (iv) and (v) only done
clear
C)
(ii) and (iii) only done
clear
D)
(ii) and (v) only done
clear
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question_answer22)
How many kingdoms contain eukaryotes in five kingdom system of classification of R.H Whittaker?
A)
Four kingdoms done
clear
B)
One kingdom done
clear
C)
Two kingdoms done
clear
D)
Three kingdoms done
clear
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question_answer23)
Match column-I with column-II and select the correct answer using the codes given below.
| Column-I (Kingdom) | | Column-II (Class) |
A. | Plantae | I. | Arhaebacteria |
B. | Fungi | II. | Euglenoids |
C. | Protista | III. | Phycomucetes |
D. | Monera | IV. | Algae |
A)
A-IV B-III C-II D-I done
clear
B)
A-I B-II C-III D-IV done
clear
C)
A-III B-IV C-II D-I done
clear
D)
A-IV B-II C-III D-I done
clear
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question_answer24)
Litmus is obtained from:
A)
Lichen done
clear
B)
Algae done
clear
C)
Fungi done
clear
D)
Protozoa done
clear
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question_answer25)
A bacteriophage is:
A)
a virus attacking a bacterium. done
clear
B)
a bacterium attacking a virus. done
clear
C)
a stage in the life-cycle of bacterium. done
clear
D)
virus attacking another virus. done
clear
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question_answer26)
Black water fever is caused by:
A)
Plasmodium malariae done
clear
B)
P. ovule done
clear
C)
P. falciparum done
clear
D)
P. vivax done
clear
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question_answer27)
Identify the correct statements regarding archaebacteria. |
(i) Archaebacteria differs from other bacteria in having different cell wall structure. |
(ii) Their cell wall is made up of cellulose and contains high amount of unsaturated fatty acid, which is responsible for their survival in extreme conditions. |
(iii) Thermoacidophiles have dual ability to tolerate high temperature as well as high acidity. |
A)
(i) and (ii) done
clear
B)
(ii) and (iii) done
clear
C)
(i) and (iii) done
clear
D)
(i), (ii) and (iii) done
clear
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question_answer28)
Read the given statements and answer the question. |
(i) It includes unicellular as well as multicellular fungi. |
(ii) In multicellular forms, hyphae are branched and septate. |
(iii) Conidiophore produces conidia (spores) exogenously in chain. |
(iv) Sexual spores are ascospores produced endogenously in chain. |
(v) Fruiting body is called ascocarp. |
Identify the correct class of fungi which have all the above given characteristics.
A)
Phycomycetes done
clear
B)
Sac fungi done
clear
C)
Club fungi done
clear
D)
Fungi imperfecti done
clear
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question_answer29)
Contractile vacuoles of Paramoecium are analogous to:
A)
Sweat glands of mammals done
clear
B)
Uriniferous tubules done
clear
C)
Gastrovascular cavity of Hydra done
clear
D)
Typhlosole of earthworm done
clear
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question_answer30)
Members of Phycomycetes are found: |
(i) in aquatic habitats |
(ii) on decaying wood |
(iii) in moist and damp places |
(iv) as obligate parasite on plants |
Which of the statements given above are correct? |
A)
(i) and (ii) done
clear
B)
(ii), (iii) and (iv) done
clear
C)
(i), (ii) and (iii) done
clear
D)
(i), (ii), (iii) and (iv) done
clear
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question_answer31)
The symbiotic association of fungi and algae is called:
A)
Lichen done
clear
B)
Mycorrhiza done
clear
C)
Rhizome done
clear
D)
Endomycorrhiza done
clear
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question_answer32)
Which of the following combinations of characters is true for slime moulds?
A)
Parasitic, plasmodium with true walls, spores dispersed by air currents. done
clear
B)
Saprophytic, plasmodium without walls, spores dispersed by water. done
clear
C)
Parasitic, plasmodium without walls, spores dispersed by water. done
clear
D)
Saprophytic, plasmodium without walls, spores dispersed by air currents. done
clear
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question_answer33)
Nutritionally bacteria are:
A)
Autotrophic done
clear
B)
Symbiotic done
clear
C)
Parasitic done
clear
D)
All of the above done
clear
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question_answer34)
Which bacteria would function best in hot temperatures\[(45-60{}^\circ C)\]?
A)
Psychrophiles done
clear
B)
Thermophiles done
clear
C)
Mesophiles done
clear
D)
All would do equally well done
clear
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question_answer35)
If the generation time of a bacterium is 40 minutes and a culture containing \[{{10}^{7}}\] cells/ml is grown for 4 hours, then calculate its population after that period.
A)
\[64\times {{10}^{7}}\] done
clear
B)
\[32\times {{10}^{7}}\] done
clear
C)
\[6\times {{10}^{7}}\] done
clear
D)
\[40\times {{10}^{7}}\] done
clear
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question_answer36)
Smallest virus is:
A)
Foot and Mouth virus done
clear
B)
Alfalfa Mosaic virus done
clear
C)
Pseudomonas done
clear
D)
TMV done
clear
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question_answer37)
Yeast is an important source of:
A)
Vitamin C done
clear
B)
Vitamin B done
clear
C)
Vitamin A done
clear
D)
Vitamin D done
clear
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question_answer38)
In manufacturing of bread, it becomes porous due to release of \[C{{O}_{2}}\] by the action of:
A)
Virus done
clear
B)
Yeast done
clear
C)
Bacteria done
clear
D)
Protozoans done
clear
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question_answer39)
Which of the following statements is correct for both blue-green algae and bacteria?
A)
Both show anaerobic respiration. done
clear
B)
Both have chlorophyll pigment. done
clear
C)
Both are devoid of true nucleus. done
clear
D)
None of the above done
clear
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question_answer40)
Match column-I with column-II and select the correct answer using the codes given below.
| Column-I | | Column-II |
A. | Chrysophytes | I. | Paramoecium |
B. | Dinoflagellates | II. | Euglena |
C. | Euglenoids | III. | Gonyaulax |
D. | Protozoans | IV | Diatoms |
A)
A-I B-III C-II D-IV done
clear
B)
A-II B-IV C-III D-I done
clear
C)
A-IV B-II C-III D-I done
clear
D)
A-IV B-III C-II D-I done
clear
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question_answer41)
The phylogenetic system of classification was put forth by:
A)
Carolus Linnaeus done
clear
B)
George Bentham and Joseph Dalton Hooker done
clear
C)
Theophrastus done
clear
D)
Adolf Engler and Karl PrantI done
clear
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question_answer42)
Plasmodium, the parasite, belongs to class:
A)
Sarcodina done
clear
B)
Ciliata done
clear
C)
Sporozoa done
clear
D)
Dinophyceae done
clear
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question_answer43)
In the five kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen fixing bacteria and methanogenic archaebacteria?
A)
Monera done
clear
B)
Fungi done
clear
C)
Plantae done
clear
D)
Protista done
clear
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question_answer44)
Read the following statements and answer the question. |
(i) Some members are saprophytes or parasites while a large number of them are decomposers of litter and help in mineral cycling. |
(ii) They reproduce only by asexual spores known as conidia. |
(iii) Mycelium is septate and branched. |
(iv) Altemaria, Colletotrichum and Trichoderma are examples of this class. |
Which of the following class of fungi is being described by the above statements? |
A)
Phycomycetes done
clear
B)
Deuteromycetes done
clear
C)
Basidiomycetes done
clear
D)
Ascomycetes done
clear
View Solution play_arrow
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question_answer45)
Match column-I with column-II and select the correct answer using the codes given below.
| Column-I | | Column-II |
A. | Streptomyces | I. | Food poisoning |
B. | Rhizobium | II. | Source of antibiotics |
C. | Nitrosomonas | III. | Nitrogen fixation |
D. | Acetobacter | IV. | Nitrification |
| | V. | Vinegar synthesis |
A)
A-II B-III C-I D-V done
clear
B)
A-II B-III C-IV D-V done
clear
C)
A-IV B-V C-I D-III done
clear
D)
A-V B-I C-III D-IV done
clear
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question_answer46)
Which one of the following pairs is not correctly matched?
A)
Anabaena - Cyanobacteria done
clear
B)
Amoeba - Protozoa done
clear
C)
Gonyaulax - Dinoflagellates done
clear
D)
Albugo - Chrysophytes done
clear
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question_answer47)
The cell wall of fungi is made up of:
A)
Chitin done
clear
B)
Cellulose done
clear
C)
Pectin done
clear
D)
Suberin done
clear
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question_answer48)
The main difference between Gram positive and Gram negative bacteria lies in the composition of:
A)
Cilia done
clear
B)
Cell wall done
clear
C)
Nucleolus done
clear
D)
Cytoplasm done
clear
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question_answer49)
LPP-1 is a:
A)
Bacterium done
clear
B)
Fungus done
clear
C)
Bacteriophage done
clear
D)
Cyanophage done
clear
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question_answer50)
The conditions which would be favoured by thermoacidophiles are:
A)
Hot and alkaline done
clear
B)
Snow and acidic done
clear
C)
Hot sulphur spring done
clear
D)
Gut of cows done
clear
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question_answer51)
Natural system of classification differs from artificial system in:
A)
employing only one floral trait done
clear
B)
taking only one vegetative trait done
clear
C)
bringing out similarities and dissimilarities done
clear
D)
developing evolutionary trends done
clear
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question_answer52)
The genetic material in viruses is/are:
A)
Only RNA done
clear
B)
Only DNA done
clear
C)
RNA and DNA both done
clear
D)
RNA or DNA i. e. one nucleic acid in a virus done
clear
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question_answer53)
Which of the following fungi are edible?
A)
Agaricus campestris done
clear
B)
Morchella esculenta done
clear
C)
Podaxon prodaxis done
clear
D)
All of the above done
clear
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question_answer54)
Match the terms given in column-I with their examples given in column-II and choose the correct option.
| | | |
A. | Ascus | I. | Spirulina |
B. | Basidium | II. | Penicillium |
C. | Protista | III. | Agaricus |
D. | Cyanobacteria | IV. | Euglena |
E. | Animalia | V. | Sponges |
A)
A-II B-III C-IV D-V E-I done
clear
B)
A-I B-II C-III D-V E-IV done
clear
C)
A-II B-V C-III D-I E-IV done
clear
D)
A-II B-III C-IV D-I E-V done
clear
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question_answer55)
Which protist reproduces both by binary fission and conjugation?
A)
Amoeba done
clear
B)
Paramoecium done
clear
C)
Euglena done
clear
D)
Monocystis done
clear
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question_answer56)
Which of the following statements is not correct for methanogens?
A)
They are archaebacteria. done
clear
B)
They live in marshy areas. done
clear
C)
Methane is their preferred carbon source. done
clear
D)
They are present in guts of several ruminant animals (cow, buffaloes) and produce biogas \[(C{{H}_{4}})\]from the dung of these animals. done
clear
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question_answer57)
The given figure shows some structures labelled as 1, 2, 3 and 4. Which structure has the protein coat that encloses the nucleic acid?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer58)
Enveloped virus infects/enters the host cell through:
A)
Direct penetration done
clear
B)
Injecting nucleic acid done
clear
C)
Endocytosis done
clear
D)
Endocytosis through chemical stimulators done
clear
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question_answer59)
Infective stage of Entamoeba histolytica is:
A)
Trophozoite done
clear
B)
Pre cyst done
clear
C)
Uninucleate cyst done
clear
D)
Tetranucleate cyst done
clear
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question_answer60)
Cyanobacteria are:
A)
mosses which attack bacteria done
clear
B)
bacteria which attack cyanophyceae done
clear
C)
autotrophic organisms with phycocyanin done
clear
D)
None of the above done
clear
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question_answer61)
Whittaker placed prokaryotes and akaryotes in:
A)
Protista done
clear
B)
Protozoa done
clear
C)
Plantae done
clear
D)
Monera done
clear
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question_answer62)
Viruses that infect bacteria, multiply and cause their lysis, are called:
A)
Lysozymes done
clear
B)
Lipolytic done
clear
C)
Lytic done
clear
D)
Lysogenic done
clear
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question_answer63)
Archaea differ from eubacteria in which one of the following features?
A)
They have a rigid wall. done
clear
B)
Their cell wall lacks peptidoglycan component. done
clear
C)
They have 16s rRNA. done
clear
D)
They are very ancient. done
clear
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question_answer64)
Leishmania tropica produces:
A)
Sleeping sickness done
clear
B)
Malaria done
clear
C)
Dysentery done
clear
D)
Oriental sores done
clear
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question_answer65)
Common bread mold is:
A)
Yeast done
clear
B)
Rhizopus done
clear
C)
Bacteria done
clear
D)
Virus done
clear
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question_answer66)
Which of the following fixes atmospheric N?
A)
Nostoc done
clear
B)
Algae done
clear
C)
Methanogens done
clear
D)
None of these done
clear
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question_answer67)
Which of the following is not a character of protista?
A)
Protists are prokaryotic. done
clear
B)
Some protists have cell walls. done
clear
C)
Mode of nutrition is both autotrophic and heterotrophic. done
clear
D)
Body organisation is cellular. done
clear
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question_answer68)
Which of the following statements is not correct for viruses?
A)
Viruses are obligate parasites. done
clear
B)
Viruses can multiply only when they are inside the living cells. done
clear
C)
Viruses cannot pass through bacterial filters. done
clear
D)
Viruses are made up of protein and DNA or RNA (never both DNA and RNA). done
clear
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question_answer69)
Plasmogamy is fusion of:
A)
Two haploid cells including their nuclei done
clear
B)
Two haploid cells without nuclear fusion done
clear
C)
Sperm and egg done
clear
D)
Sperm and two polar nuclei done
clear
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question_answer70)
When fungi feed on dead organic matter, they are known as:
A)
Dimorphic done
clear
B)
Parasites done
clear
C)
Saprophytes done
clear
D)
None of these done
clear
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question_answer71)
Ergot is caused by:
A)
Claviceps done
clear
B)
Penicillium done
clear
C)
Aspergillus done
clear
D)
Rhizobium done
clear
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question_answer72)
Koch's postulates are related to:
A)
Cell structure of bacteria done
clear
B)
Cell structure of micro-organisms done
clear
C)
Laws of diseases done
clear
D)
Origin of micro-organisms done
clear
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