Diversity in Living World-Five Kingdom Classification [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 239 - 245 of 986
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Question 239
Question MCQ▾
Tungro disease of rice is caused by
Choices
Choice (4) | Response | |
---|---|---|
a. | Prions | |
b. | Viroid | |
c. | Virus | |
d. | Mycoplasma |
Question 240
Question MCQ▾
Ganga water does not undergo decay due to the presence of:-
Choices
Choice (4) | Response | |
---|---|---|
a. | Phages | |
b. | Antibiotics | |
c. | Algae | |
d. | Minerals |
Question 241
Question MCQ▾
The infectious nature of tobacco mosaic disease was discovered by; -
Choices
Choice (4) | Response | |
---|---|---|
a. | Stanley | |
b. | Ivanowsky | |
c. | Adolf Mayer | |
d. | Beijerinck |
Question 242
Question MCQ▾
Double stranded DNA plant virus is:-
Choices
Choice (4) | Response | |
---|---|---|
a. | Alfalfa mosaic virus | |
b. | Turnip yellow mosaic virus | |
c. | Cauliflower mosaic virus | |
d. | Tobacco mosaic virus |
Question 243
Question MCQ▾
The smallest disease causing agent is:-
Choices
Choice (4) | Response | |
---|---|---|
a. | Virion | |
b. | Viroid | |
c. | Prion | |
d. | Mycoplasma |
Question 244
Question MCQ▾
T. O. Diener discovered a:-
Choices
Choice (4) | Response | |
---|---|---|
a. | Free infection DNA | |
b. | Free infectious RNA | |
c. | Infectious protein | |
d. | Bacteriophage |
Question 245
Question MCQ▾
Lichens are ecologically important because -
Choices
Choice (4) | Response | |
---|---|---|
a. | They are pioneers (earliest settlers on barren rocks) and pass xeric conditions successfully | |
b. | They are associated with mycorrhizal roots | |
c. | They can grow in greatly polluted area | |
d. | They are association of algae and fungi |