Q. No.The part of the complex stomach of ruminants that has methanogens present is the:
1.
Omassum
2.
Abomasum
3.
Rumen
4.
Reticulum
The major problem with the use of chemicals to control plant diseases and pests is:
1. High cost
2. Ineffectivity against most pathogens
3. Difficulty in production
4. Non-specific nature
Match each item in Column I [Diazotroph] with the feature in Column II and select the correct answer from the codes given below:
|
|
Column I |
|
Column II |
|
A. |
Cyanobacteria |
a. |
Actinorhizal symbiont |
|
B. |
Frankia |
b. |
Do not form nodules |
|
C. |
Rhizobium |
c. |
Free-living nitrogen fixer |
|
D. |
Azotobacter |
d. |
Legume symbiont |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | a | b | d | c |
| 4. | b | a | d | c |
What advantage does the mycobiont get in the mycorrhizal symbiotic relationship?
| 1. | Adequate uptake of water |
| 2. | More availability of minerals like phosphorus |
| 3. | Availability of carbohydrates for energy |
| 4. | Resistance to diseases, drought, and salinity |
What is true regarding the activated sludge generated during the secondary treatment of sewage water?
| I: | It is made up of aerobic bacteria that sediment down |
| II: | A large part of the activated sludge is pumped back into the aeration tank to serve as the inoculum. |
| III: | A minor part of the sludge is pumped into large tanks called anaerobic sludge digesters. |
| 1. | Only I | 2. | Only II and III |
| 3. | Only I and III | 4. | I, II and III |
Which of the following human diseases cannot be treated by antibiotics?
| 1. | Plague | 2. | Diphtheria |
| 3. | Leprosy | 4. | Mumps |
With reference to human beings, antibiotics are actually:
| 1. | Anti life | 2. | Pro-life |
| 3. | Irrelevant to life | 4. | Defining life |
‘Toddy’, a traditional drink of some parts in southern India, is made by fermenting sap from:
| 1. | Soyabean | 2. | Bamboo shoots |
| 3. | Palms | 4. | Sugarcane |
Biogas is a mixture of:
| 1. | Methane, Carbon dioxide, and Hydrogen sulfide |
| 2. | Methane, Carbon dioxide, and Ammonia |
| 3. | Methane, Ammonia, and Hydrogen sulfide |
| 4. | Ammonia, Carbon dioxide, and Hydrogen sulfide |
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