Tag: gm crops

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Questions Related to gm crops

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Flavr Savr Tomato has increased ____________.

  1. Productivity

  2. Vigour

  3. Shelf life

  4. Flowering period
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Flavr Savr tomato was engineered to delay the softening process by inhibiting the production of polygalacturonase, an enzyme that breaks down cell walls. This significantly increases the shelf life of the fruit.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Tobacco plants resistant to nematodes have been developed by introduction of DNA that produces _____________.

  1. Both sense and anti sense RNA

  2. An antifeedent

  3. A toxic protein

  4. A particular hormone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RNA interference (RNAi) is used to protect tobacco plants from nematodes. By introducing DNA that produces both sense and antisense RNA, the plant creates double-stranded RNA, which silences essential nematode genes.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Genetically modified crops can be produced by ___________.

  1. Recombinant DNA technology

  2. Somatic hybridisation

  3. Cross breeding

  4. Micropropagation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Genetically modified crops are created by inserting specific genes from one organism into another using recombinant DNA technology. This allows for the introduction of desirable traits like pest resistance or improved nutrition.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

The introduction of t-DNA into plants involves

  1. Infection of the plant by Agrobacterium tumefaciens

  2. Altering the pH of the soil, then heat shocking the plants

  3. Exposing the plants to cold for a brief period

  4. Allowing the plant roots to stand in water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Agrobacterium tumefaciens is a soil bacterium that naturally transfers a portion of its DNA, known as T-DNA, into the plant genome. Scientists exploit this natural mechanism to introduce foreign genes into plants.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Strategy used to prevent nematode infection of tobacco roots is _______________.

  1. Use of agrochemicals

  2. Bt toxin gene

  3. Gene mutation

  4. RNA interference
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

RNA interference (RNAi) is a biological process where RNA molecules inhibit gene expression. In the case of nematode infection in tobacco, RNAi is used to silence specific genes required by the nematode to survive.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Which one of the following statements is incorrect?

  1. Tobacco is obtained from the seeds of Nicociana tobacco

  2. Rubber is obtained from the latex of some trees

  3. Fruits of Embolic officials are eaten raw and in pickled from

  4. Tectona grandis yields good timber
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tobacco is obtained from the dried leaves of Nicotiana tabacum (not Nicociana tobacco), not from seeds. The statement in option A is incorrect. Other options correctly state that rubber comes from latex, Emblica officinalis fruits are edible, and Tectona grandis (teak) yields timber.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Golden rice is a transgenic crop with a trait for ________________.

  1. Pest resistance

  2. High vitamin a content

  3. Drought resistance

  4. High protein content
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Golden rice is a genetically modified variety of rice created to biosynthesize beta-carotene, a precursor of vitamin A, in the edible parts of rice. Its primary nutritional trait is combating vitamin A deficiency.

Multiple choice botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

Introduction of food plants developed by genetic engineering is not desirable because -

  1. Economy of developing countries may suffer

  2. These products are less tasty as compared to the already existing products

  3. This method is costly

  4. There is danger of coming viruses, allergens and toxins with introduced crop
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
It is difficult for developing countries to keep up and maintain genetically engineered crops. Therefore, the introduction of food plants by genetic engineering is not desirable for developing countries.

So, the correct answer is 'Economy of developing countries may suffer'.