Tag: botany

Questions Related to botany

Transgenic plants are developed by

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

  1. Introducing foreign genes

  2. Introducing gene mutations

  3. Deleting certain chromosome parts

  4. Stopping spindle formation

Show answer
Correct Option: A

In an experiment the gene of bioluminescence from firefly has been successfully transferred into a plant as a result of which it started to glow. In the terminology of the molecular genetics, the plant is called ___________.

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

  1. Firefly plant

  2. Hybrid plant

  3. Transgenic plant

  4. Bioluminescent plant

Show answer
Correct Option: C
Explanation:

Transgenic plants are plants that have been genetically engineered, a breeding approach that uses recombinant DNA techniques to create plants with new characteristics. They are identified as a class of genetically modified organism (GMO). In this case, firefly's gene is transferred to the plant, hence the plant is called transgenic plant.


So, the correct answer is 'Transgenic plant'.

Give example of a GM crop that can tolerate abiotic stress. 

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

  1. Transgenic tomato

  2. Bt-Brinjal

  3. Golden rice

  4. Pomato

Show answer
Correct Option: A
Explanation:

Transgenic tomato has been genetically engineered to have resistance to abiotic stress.

By Brinjal has pest resistance.
Golden rice is genetically engineered to have higher nutritional value.
Pomato is grafted from shoot of tomato plants and root of potato plant to obtain two products from the same plant.
So the correct answer is ' Transgenic tomato'.

Which of the following is a mismatch regarding the transgenic plant and its application?

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

  1. Golden rice $\Rightarrow$ Vitamin A enriched rice

  2. Flavr savr tomato $\Rightarrow$ Delay ripening

  3. Tobacco $\Rightarrow$ Herbicide resistant

  4. Bt corn $\Rightarrow$ Resistant to nematode

Show answer
Correct Option: C
Explanation:

In Tobacco because of  biotechnology, transgenic plants produced which have low nicotine in their leaves. 

Transgenic plants have been shown to express the genes of
I) Insulin
II) Interferons
III) Human growth hormones
IV) Antibodies
V) Antibiotics.

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

  1. I, II, III, IV, V

  2. Except III, IV

  3. Except IV

  4. I, II, III only

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Correct Option: A

RNA i us used to control pests on which plant?

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

  1. Tobacco

  2. Mango

  3. Potato

  4. Poppy

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Correct Option: A

An improved variety of transgenic basmati rice?

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

  1. Does not require chemical fertilizers and growth hormones

  2. Gives high yield and is rich in vitamin A

  3. Is completely resistant to all insect pests and disease of paddy

  4. Gives high yield but has no characteristic aroma

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Correct Option: A

Transgenic plants receive genes from which of the following organisms?

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

  1. Insects

  2. Bacteria

  3. Virus

  4. All of the above

Show answer
Correct Option: D
Explanation:

There are several methods for introducing genes into plants, including:

  •     Infecting plant cells with plasmids as vectors carrying the desired gene.
  •     Shooting microscopic pellets containing the gene directly into the cell.
In contrast to animals, there is no real distinction between somatic cells and germline cells. Somatic tissues of plants, e.g., root cells grown in culture
  •     can be transformed in the laboratory with the desired gene;
  •     grown into mature plants with flowers.
If all goes well, the transgene will be incorporated into the pollen and eggs and passed on to the next generation.
In this respect, it is easier to produce transgenic plants than transgenic animals.
 Progress is being made on several fronts to introduce new traits into plants using recombinant DNA technology.
The genetic manipulation of plants has been going on since the dawn of agriculture, but until recently this has required the slow and tedious process of cross-breeding varieties. Genetic engineering promises to speed the process and broaden the scope of what can be done.

Transgenic plants of tomato having resistance to hornworm larvae are those which have

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

  1. Foreign resistant gene

  2. Mutated resistant gene

  3. Synthetic resistant gene

  4. Superimposed resistant gene

Show answer
Correct Option: A
Explanation:

Transgenic tomato plants expressing a truncated insect control protein gene from Bacillus thuringiensis were  protected from attack by tobacco hornworm, tobacco budworm and tomato fruit worm larvae. Filed tests involving transgenic tomato lines challenged with tobacco hornworm, tomato fruit worm and tomato pin worm were conducted for two years. These transgenic plants suffered only minor feeding damage from tobacco hornworm, while the untransformed controls were completely defoliated. The foreign gene present had made this possible.

A tumour inducing plasmid widely used in the production of transgenic plant is that of

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

  1. Escherichia coli

  2. Bacillus thuringiensis

  3. Staphylococcus aureus

  4. Agrobacterium tumefaciens

Show answer
Correct Option: D
Explanation:

A tumor (crown gall) inducing plasmid widely used in the production of transgenic plants is Agrobacterium tumefaciens. Bacillus thuringiensis is used for the production of disease-resistant plants. Other 2 are disease-causing bacteria.