Tag: biotechnology in agriculture

Questions Related to biotechnology in agriculture

The introduction of t-DNA into plants involves

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

  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

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Correct Option: A

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

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

  1. Use of agrochemicals

  2. Bt toxin gene

  3. Gene mutation

  4. RNA interference

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Correct Option: D

Which one of the following statements is incorrect?

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

  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

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Correct Option: A

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

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

  1. Pest resistance

  2. High vitamin a content

  3. Drought resistance

  4. High protein content

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Correct Option: A

Consider the following statements:
In a ripe tomato, as compared to an unripe tomato, the amount of.
a. Vitamins is higher
b. Carbohydrates is less
c. Minerals is less
d. Proteins is higher
Of these statements.

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

  1. $1, 3$ and $4$ are correct

  2. $1, 2$ and $4$ are correct

  3. $2, 3$ and $4$ are correct

  4. $1, 2$ and $3$ are correct

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Correct Option: A

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

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

  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

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Correct Option: A
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'.

Trifolirhizin, a phytoalexin has been reported from.

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

  1. Soybean roots

  2. Red clover roots

  3. Bean pods

  4. Pea pods

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Correct Option: A

Transgenic plants are the ones -

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

  1. Grown in artificial medium after hybridization in the field

  2. Produced by a somatic embryo in artificial medium

  3. Generated by introducing foreign DNA in to a cell and regenerating a plant from that cell

  4. Produced after protoplast fusion in artificial medium

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Correct Option: C

In tomato, genotype $aabbcc$ produces $100gm$ tomatoes and $AABBCC$ produces $160gm$ tomatoes what is the contribution of each polygenes in the production of tomatoes?

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

  1. $10gm$

  2. $20gm$

  3. $30gm$

  4. $40gm$

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Correct Option: A

Biolistices (gene - gun) is suitable for 

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

  1. disarming pathogen vectors

  2. transformation of plant cells

  3. constructing recombinant $DNA$ by joining with vectors

  4. $DNA$ finger printing

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Correct Option: B
Explanation:
In genetic engineering, a gene gun or a biolistic particle delivery system, originally designed for plant transformation, is a device for delivering exogenous DNA (transgenes) to cells. The payload is an elemental particle of a heavy metal coated with DNA (typically plasmid DNA). This technique is often simply referred to as biolistics.

This device is able to transform almost any type of cell, including plants, and is not limited to transformation of the nucleus; it can also transform organelles, including plastids.

So the correct option is 'transformation of plant cells'.