question_answer 1)
Bacteria have been grouped into four different types based on their shapes. Identify the different types and select the correct statement regarding it.
A)
Vibrio cholerae is an example of type S, which causes cholera. done
clear
B)
Lactobacillus is an example of type P, which helps in curdling of milk. done
clear
C)
Type R bacteria are rod-shaped and are called as bacilli bacteria. done
clear
D)
Streptococcus is an example of type Q bacteria that causes pneumonia. done
clear
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question_answer 2)
Study the following table and select the correct option for P, Q, R and S.
Disease Causative organism Mode of transmission Chicken-pox Virus P Q Bacterium Water/Food Malaria R Mosquito S Virus Water
A)
P-Air/contact; Q-Cholera; R-Protozoan; S-Hepatitis B done
clear
B)
P-Mosquito; Q-Measles; R-Fungi; S-Polio done
clear
C)
P-Water; 0-Polio; R-Protozoan; S-Hepatitis B done
clear
D)
P-Air; Q-Typhoid; R-Fungi; S-Measles done
clear
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question_answer 3)
Refer to the given diseases.
(i) Athlete's foot
(ii) Amoebic dysentery
(iii) Polio
(iv) Cholera
(v) Malaria
(vi) Measles
(vii) Pyorrhea
(viii) Ringworm
(ix) Typhoid
(x) Tuberculosis
Select the option which correctly identifies bacterial diseases (P), viral diseases (Q), protozoan diseases (R) and fungal diseases (S).
A)
B)
C)
D)
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question_answer 4)
Match different organisms in column I with their related characteristics in column II and select the correct option from the codes given below.
Column I Column II (a) Entamoeba histolytica (i) A brown alga which is a rich source of iodine (b) Bacteriophage (ii) A protozoan that causes disease in human beings by living in the large intestine of humans (c) Penicillium (iii) A virus which infects a bacterial cell. (d) Fucus (iv) A fungus used to obtain antibiotic.
A)
(a) - (ii), (b) - (iii), (c) - (iv), (d) - (i) done
clear
B)
(a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) done
clear
C)
(a) - (ii), (b) - (i), (c) - (iii), (d) - (iv) done
clear
D)
(a) - (iv), (b) - (ii), (c) - (i), (d) - (iii) done
clear
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question_answer 5)
Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) Diatoms are marine algae which float in water due to the presence of light storage fats with silica.
(ii) AIDS virus kills WBC and reduces immunity of the body.
(iii) Escherichia coli is present in intestine of human where they help in digestion of food.
(iv) A virus always consists of double strands of DNA or RNA surrounded by protein coat.
A)
B)
C)
D)
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question_answer 6)
Select the incorrect statement.
A)
Anthrax is a bacterial disease that affects humans and cattle. done
clear
B)
Rust of wheat is a fungal disease that spread by air. done
clear
C)
Citrus canker is a viral disease that affects citrus fruits. done
clear
D)
Yellow vein mosaic is a viral disease that affects bhindi. done
clear
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question_answer 7)
A bacteria undergoes binary fission in every minute. This bacterium can fill up a cup in 1 hour. In how much time will the cup be half filled?
A)
30 minutes done
clear
B)
59 minutes done
clear
C)
20 minutes done
clear
D)
40 minutes done
clear
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question_answer 8)
Study the given figures and select the correct statements regarding these.
(i) Organism P is a unicellular green alga. (ii) Organism Q is a parasitic protozoan. (iii) Organism Q causes diseases in human beings. (iv) Both the organisms P and Q cannot synthesise their own food.
A)
(i) and (ii) only done
clear
B)
(ii), (iii) and (iv) only done
clear
C)
(i), (ii) and (iii) only done
clear
D)
(i), (ii), (iii) and (iv) done
clear
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question_answer 9)
How many among the following are fungal diseases in plants?
Citrus canker, Late blight of potato, Mosaic disease of mustard, Downy mildew of grapes, Leaf curl of cotton, Rust of wheat, Tobacco mosaic disease, Loose smut of wheat, Leaf curl of tomato
A)
6 done
clear
B)
7 done
clear
C)
4 done
clear
D)
5 done
clear
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question_answer 10)
Study the given correlation.
Heat treatment : Sterilisation : : Vaccination : X
Here, X refers to
A)
Pasteurisation done
clear
B)
Immunisation done
clear
C)
Fertilisation done
clear
D)
Inoculation. done
clear
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question_answer 11)
Match column I with column II and select the correct option from the codes given below.
Column I Column II (a) Apple scab (i) Blue green algae (b) Flagellum (ii) Xanthomonas campestris (c) Nostoc (iii) Spirogyra (d) Tooth Paste (iv) Fungus (e) Multicellular (v) Euglena
A)
(a)-(v), (b)-(iv), (c)-(ii), (d)-(i), (e)-(iii) done
clear
B)
(a)-(ii), (b)-(v), (c)-(i), (d)-(iii), (e)-(iv) done
clear
C)
(a)-(iv), (b)-(v), (c)-(i), (d)-(ii), (e)-(iii) done
clear
D)
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv), (e)-(v) done
clear
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question_answer 12)
Refer to the given figure showing different steps regarding antibodies fighting against a disease.
Arrange them in a correct sequence.
A)
(ii) \[\to \] (i) \[\to \] (iii) done
clear
B)
(i) \[\to \] (ii) \[\to \] (iii) done
clear
C)
(i) \[\to \] (iii) \[\to \] (ii) done
clear
D)
(iii) \[\to \] (i) \[\to \] (ii) done
clear
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question_answer 13)
Read the given passage and select the correct option for X and Y.
Microorganisms are used for the large scale production of alcohol, wine and acetic acid. X is used for commercial production of alcohol and wine. The process of conversion of sugar into alcohol is known as Y.
A)
X: Streptococcus; Y: Aerobic respiration done
clear
B)
X: Saccharomyces Y: Fermentation done
clear
C)
X: Lactobacillus; Y : Fermentation done
clear
D)
X: Saccharomyces; Y: Aerobic respiration done
clear
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question_answer 14)
Match column I with column II and select the correct option from the codes given below. (There can be more than one match for column I.)
Column I
Column II
(a) Green algae
(i) Gelidium
(b) Red algae
(ii) Chlamydomonas
(c) Blue-green algae
(iii) Nostoc
(d) Brown algae
(iv) Polysiphonia
(v) Ulothrix
(vi) Anabaena
(vii) Sargassum
(viii) Fucus
A)
B)
C)
D)
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question_answer 15)
Identify the given microorganism and select the incorrect statement regarding it.
A)
It is a saprophyte commonly called as black bread mould. done
clear
B)
It reproduces by means of spores. done
clear
C)
It results in the spoilage of food materials. done
clear
D)
It is a parasitic fungus that causes various diseases in plants, animals and humans. done
clear
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question_answer 16)
Refer to the given passage.
The mosquito P is a carrier of virus that spreads a disease Q. Another mosquito R is a carrier of protozoan S that spreads a disease called T.
Select the option which correctly identifies P, Q, R, S and T.
A)
P-Aedes, Q-Dengue, R-Anopheles, S-Plasmodium, T-Malaria done
clear
B)
P-Tse tse fly, Q-Dengue, R-Anopheles, S-Plasmodium, T-Malaria done
clear
C)
P-Aedes, Q-Dengue, R-Tse tse fly, S-Entamoeba, T-Amoebic dysentery done
clear
D)
P-Tse tse fly, Q-Dengue, R-Aedes, S-Entamoeba, T-Amoebic dysentery done
clear
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question_answer 17)
Refer to the given figures P, Q, R and S.
Which of the following statements are correct regarding them?
(i) P is the mould from which penicillin is made.
(ii) R is considered as connecting link between plants and animals.
(iii) Q and S are parasites which live in the bodies of other organisms including human beings.
(iv) R and S bear chlorophyll and prepare food is presence of sunlight.
(v) S is colonial form of algae.
A)
(ii), (iv) and (v) only done
clear
B)
(i), (ii), (iv) and (v) only done
clear
C)
(i), (iii) and (iv) only done
clear
D)
(i), (ii), (iii), (iv) and (v) done
clear
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question_answer 18)
Refer to the given outline of \[{{\text{N}}_{\text{2}}}\]cycle.
Identify X and Y and select the correct statement regarding this.
A)
In the process X, protein is converted into ammonia by the action of bacteria while in the process Y nitrates present in the decaying remains get converted into free nitrogen gas. done
clear
B)
In the process X, nitrates present in the soil get converted into free nitrogen gas while in the process Y, protein is converted into ammonia by the action of bacteria. done
clear
C)
Process X represents the conversion of ammonia into nitrates while process Y represents the conversion of nitrates into the free nitrogen gas. done
clear
D)
Process X represents the conversion of ammonia into nitrites while process Y represents the conversion of complex organic compound like proteins into ammonia. done
clear
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question_answer 19)
Refer to the given experimental set up as shown in the given figure and select the correct option regarding it.
A)
In X, yeast causes fermentation which converts sugar into lactic acid and carbon dioxide. done
clear
B)
In Y, oxygen gas is released while carbon dioxide gas is absorbed. done
clear
C)
In Y, lime water turns milky. done
clear
D)
Both (b) and (c) done
clear
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question_answer 20)
Refer to the given figures of bacteria (X, Y and Z) and read the statements (i, ii and iii) regarding them. Based on the given information, identify the bacteria and select the correct option.
(i) Bacteria X causes cholera. (ii) Bacteria Y causes a disease which disrupts proper exchange of gases. (iii) Bacteria Z converts lactose sugar of milk into lactic acid.
A)
X is Vibrio choleras. done
clear
B)
Y is Salmonella typhi. done
clear
C)
Z is Lactobacillus. done
clear
D)
Both (a) and (c) done
clear
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