General Science

Q181.The powder used for developing fingerprints on a multi-coloured surface is

Q182.Consider the following statements. 1. The common blue-green algae, Spirogyra and Ulothrix, are found in both fresh water ponds and oceans. 2. The chameleon can look ahead with one eye and at the same time look behind with another. Which of these statements is/are correct?

Q183.‘Metastasis’ is the process by which

Q184.Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to 1. Resist drought and increase absorptive area. 2. Tolerate extremes of pH. 3. Resist disease infestation. Select the correct answer using the codes given below.

Q185.Which one of the following is not achieved by transgenic?

Q186.Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below.

Q187.Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?

Q188.Match List-I with List-II and select the correct answer using the codes given below the lists. List-I (a) Green Revolution (b) White Revolution (c) Yellow Revolution (d) Blue Revolution List-II 1. Oilseeds 2. Food grains 3. Fish and Aquaculture 4. Milk and milk products Code (a) (b) (c) (d)

Q189.Change in the base sequence within the gene is called

Q190.Match List-I with List-II and select the correct answer using the code given below the lists. List-I (a) Rutherford (b) Alfred Nobel (c) Cartwright (d) Graham Bell List-II 1. Powerloom 2. Telephone 3. Dynamite 4. Atom Bomb Code (a) (b) (c) (d)

Q191.When one gene controls two or more different characters simultaneously, the phenomenon is called

Q192.Match List-I with List-II and select the correct answer using the code given below the lists. List-I (Achievement in Genetics) (a) Discovery of transduction and conjugation in bacteria (b) Establishing the sex-linked inheritance (c) Isolation of DNA polymerase from E. coli (d) Establishing the complete genetic code List-II (Scientists) 1. Khorana 2. Korenberg 3. Lederberg 4. Morgan 5. Ochoa Code (a) (b) (c) (d)

Q193.In gene therapy, to correct the functioning of a faulty gene

Q194.Recombinant DNA Technology (Genetic Engineering) allows genes to be transferred. 1. Across different species of plants. 2. From animals to plants. 3. From micro-organisms to higher organisms. Select the correct answer using the codes given below.

Q195.Which of the following statements is/are correct regarding vegetative propagation of plants? 1. Vegetative propagation produces clonal population. 2. Vegetative propagation helps in eliminating the virus. 3. Vegetative propagation can be practised most of the year. Select the correct answer using the code given below.

Q196.Consider the following as objectives of the New Science and Technology Policy, 2003 and state which is/are correctly stated, with the help of codes given below? 1. Optimal utilisation of existing physical and knowledge resources. 2. Development of innovative technologies. 3. Development of systems and technologies for mitigation and management of natural hazards. 4. Management of intellectual property. Code

Q197.Assertion (A): Dolly was the first cloned mammal. Reason (R): Dolly was produced by in-vitro fertilization.

Q198.Consider the following effects of genetic engineering. 1. Disease resistance 2. Growth promotion 3. Animal cloning 4. Human cloning Of the above, that have been tried with a certain amount of success include.

Q199.At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us? 1. It is possible to know the pedigree of livestock. 2. It is possible to understand the causes of all human diseases. 3. It is possible to develop diseaseresistant animal breeds. Which of the statements given above is/are correct?

Q200.Steps of Recombinant DNA technology are given below. 1. Identification and isolation of the genetic material. 2. Fragmentation of DNA. 3. Obtaining the foreign gene product. 4. Downstream processing. 5. Ligation of DNA fragmentation into the vector. 6. Isolation of desired DNA fragments. 7. Amplification of gene of interest. 8. Transfer of Recombinant DNA into the host cell/organism. The correct sequence of steps is