12. Biotechnology And its applications(12)
Covers genetic engineering tools, plant tissue culture, mutation breeding, and applications of biotechnology in agriculture and medicine
Questions
Escherichia coli is
- Gut bacterium
- Soil bacterium
- Soil bacterium
- Both A and B
Bread wheat is
- tetraploid
- hexaploid
- diploid
- pentaploid
Which one is mutagenic agent ?
- Nitrous acid
- X-ray
- Ethyl methane sulphonate
- All the above
New variety of plants is produced by
- selection and hybridisation
- mutation
- introduction and mutation
- selection and introduction
______ is/are related to genetic engineering.
- Plastid
- Restriction endonucleases
- Heterosis
- Mutation
Which one is required for protoplast fusion?
- Treatment. with cellulase and pectinase
- Electrofusion or PEG treatment
- Both A and B
- Recombinant DNA technology
Development of shoot and root in tissue culture is determined by
- Cytokinin and auxin ratio
- Enzymes
- Temperature
- Plant nutrients
Which one will be searched for obtaining maximum genetic diversity?
- Recent varieties
- Old varieties
- Wild relatives
- All the above
Increased flavorful shelf life of tomato has been achieved by
- developing better storage technique
- reducing activity of enzyme polygalacturonase
- increasing the activity of enzyme polygalacturonase
- enhancing epidermal growth factor
Plasmids contain
- RNA
- RNA and proteins
- photosynthetic lamellae
- DNA
The process used for amplification or multiplication of DNA for finger printing is
- polymerase chain reaction
- nesslerisation
- southern blotting
- northern blotting
Identify the plasmid
- EcoRI
- pBR 322
- AIUI
- Hind III
Which enzyme is useful in genetic engineering?
- DNA-ase
- Amylase
- Lipase
- Restriction endonuclease
Norin-10 gene is dwarfing gene of
- wheat
- rice
- maize
- mustard
Importing better varieties and plants from outside and acclimatising them to local environment is
- selection
- cloning
- introduction
- heterosis
Pathogen-free plants can be obtained through
- clean cultivation
- embryoid cultivation
- bud or shoot tip propagation on culture medium
- grafting
The enzymes which are commonly used in genetic engineering are
- restriction endonuclease and polymerase
- endonuclease and ligase
- restriction endonuclease and ligase
- ligase and polymerase
Transgenic pigs with genes for human antigens will be useful for
- providing best human food
- resistance to common human diseases
- having all important blood factors
- organ transplantation
A common cytokinin of tissue culture is
- Benzylaminopurine
- Kinetin
- Zeatin
- Dihydrozeatin
Bagging is done to
- achieve desired pollination
- prevent contamination from unwanted pollen
- avoid self-pollination
- avoid cross-pollination