Which part would be most suitable for raising virus-free plants for micro propagation?
1. Bark
2. Vascular tissue
3. Meristem
4. Node
Which one of the following is a wrong statement?
| 1. | Most of the forests have been lost in tropical areas |
| 2. | Ozone in upper part of atmosphere is harmful to animals |
| 3. | Greenhouse effect is a natural phenomenon |
| 4. | Eutrophication is a natural phenomenon in freshwater bodies |
Companion cells are closely associated with:
| 1. | Sieve elements | 2. | Vessel elements |
| 3. | Trichomes | 4. | Guard cells |
Common cold differs from pneumonia in, that:
| 1. | Pneumonia is a communicable disease, whereas common cold is a nutritional deficiency disease |
| 2. | Pneumonia can be prevented by a live attenuated bacterial vaccine, whereas the common cold has no effective vaccine |
| 3. | Common cold is caused by a virus, while Pneumonia is caused by a bacterium. |
| 4. | Pneumonia pathogen infects alveoli whereas common cold affects the nose and the respiratory passage but not the lungs |
Pheretima and its close relatives derive nourishment from:
1. Sugarcane roots
2. Decaying fallen leaves and soil organic matter
3. Soil insects
4. Small pieces of fresh fallen leaves of maize
Removal of RNA polymerase III from nucleoplasm will affect the synthesis of:
1. tRNA
2. hnRNA
3. mRNA
4. rRNA
A process that makes an important difference between C3 and C4 plants is:
1. Transpiration
2. Glycolysis
3. Photosynthesis
4. Photorespiration
PCR and Restriction Fragment Length Polymorphism are the methods for:
1. Study of enzymes
2. Genetic transformation
3. DNA sequencing
4. Genetic fingerprinting
Best defined function of manganese in green plants is :
1. Photolysis of water
2. Calvin cycle
3. Nitrogen fixation
4. Water absorption
Measuring Biochemical Oxygen Demand (BOD) is a method used for:
| 1. | Estimating the amount of organic matter in sewage water |
| 2. | Working out the efficiency of oil-driven automobile engines |
| 3. | Measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale |
| 4. | Working out the efficiency of RBCs about their capacity to carry oxygen |
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