Crops and Animal Biotechnology

Q.

Name two plants whose flowers are eaten as vegetables

Q. Golden rice is an improved variety of rice containing more amounts of carotene.

Q. Golden rice is a transgenic crop of the future with the following trait:

1. High lysine content
2. High vitamin A content
3. Insect resistance
4. High protein content

Q.

What are transgenic crops?

Q.

The transgenic potatoes will act against bacteria

1. E.coli

2. Vibrio cholerae

3. Both A and B

4. None of the above

Q. What are the necessary characteristics of a weedicide?

1. They should be able to kill weeds
2. They should not affect crops
3. They should be toxic to humans
4. Necessarily both A and B

Q.

Write a few lines about Apple fruit.

Q. Study the following statements and select the incorrect ones.

1. (i) and (iv)
2. (i), (ii), (iii) and (iv)
3. (ii) and (iii)
4. (i) only

Q. Green revolution is not related to the use of _________.

1. pesticides
2. hybrid seeds
3. fertilizers
4. solar panels

Q.

How do soil bacteria benefit the growth of a plant?

Q.

Which of the following is/are products of biotechnology?

1. Transgenic crops

2. Human insulin

3. Growth hormones

4. All of the above

Q. What is GM crop? Name anyone crop which is grown in India.

Q.

What do you mean by RNA interference?

Q.

Genetic biodiversity in agricultural crops is majorly threatened by:

1. introduction of high yielding varieties

2. intensive use of fertilizers

3. extensive intercropping

4. intensive use of biopesticides

Q. Man-made cereal is

1. Hordeum
2. Triticale
3. Triticum
4. Eleusine

Q. 'Flavr Savr' variety of tomato which remains fresh for a longer period than normal tomato variety

1. Has high amount enzyme polygalacturonase
2. Has reduced amount of enzyme polygalacturonase
3. Is a pest resistant variety
4. Is rich in vitamin A and prevents night blindness.

Q. NaCl is harmful to most crop plants. A scientist at the University of Toronto genetically modified plant so that it could be grown in dry parts of the world where the available water has a high level of NaCl. This genetically modified plant crop with the high levels of NaCl by transporting salt into its vacuoles where it accumulates to abnormally high levels. Which feature would be observed in the genetically modified plant when compared to a non-modified plant?

1. The leaves will be modified in the plant and will be more yellow in colour.
2. The modified plant has salt crystals on the surface of its leaves.
3. The cytosol (the material between the plasma membrane and the vacuole membrane, excluding the organelles) in the modified plant has a lower osmotic pressure.
4. The cytosol in the plant will be modified as plant has a higher osmotic pressure.
5. The osmotic pressure will be the same in both plants.

Q. Bt brinjal variety is developed by using the gene isolated from _________________.

1. Lactobacillus acidophilus
2. Bacillus thuringiensis
3. Escherichia coli
4. Vibrio cholerae

Q.

Genetically modified crops are same as hybrid crops.

1. True

2. False

Q.

Genetic biodiversity in agricultural crops is threatened by_________

1. extensive intercropping

2. intensive use of biopesticides

3. introduction of high yielding varieties

4. intensive use of fertilizers

Q. How does RNA interference help in developing resistance in tobacco plant against nematode in infection?

Q. Cry genes is present in Bacillus thuringiensis.

1. True
2. False

Q. What is the genomic constitution of old world varieties of cotton (Gossypium arboreum, G. herbaceum) and new world varieties (G. hirsutum, G. barbedens) ______________.

1. All diploids
2. All triploids
3. Old world 3n and new world 2n
4. Old world 2n and new world 4n

Q. GMO crops are grown differently than normal crops.

1. False
2. True

Q.

Define hybridisation.

Q. Which of the following factors discourage farming?

1. The decline in soil fertility.
2. The high cost of fertilisers.
3. The high cost of seeds.
4. Availability of good seeds.

Q. Which statement about genetically modified (GM) foods is false?

1. Scientists have used genetic modification, in various forms, as a means of improving crop yields, crop quality, and pest resistance for many years.
2. Genetic modification includes products made by artificial mutagenesis and by non-natural crosses between unrelated spscies.
3. A major difficulty in labelling foods as GM-free is that it is virtually impossible to measure genetically modified DNA or protein molecules in most food made from GM crops.
4. The recent decision by McCain foods to stop processing GM potatoes means that they will eventually use less pesticides to produce the potatoes that are required to make fries.
5. A major environmental concern with GM crops is that engineered genes will escape into the environment, resulting in the origin of superweeds (aggressive undersirable plant species).

Q. The greatest threat to genetic diversity in agricultural crops is

1. Extensive use of insecticides and pesticides
2. Extensive mixed cropping
3. Introduction of high yielding varieties
4. Extensive use of fertilisers

Q. Triticum monococcum is

1. Diploid
2. Triploid
3. Tetraploid
4. Hexaploid

Q. Burst the bubbles having desired properties delivered by GMO crops.

1. Nutrient Rich
2. Pest Resistance
3. High Yield
4. Soil Friendly
5. High Shelf Life
6. Desired Color
7. Toxin Production
8. Improves Health