Tag: botany

Questions Related to botany

Which one is a cloning plasmid and not an expression plasmid?

botany option b: biotechnology and bioinformatics biotechnology in agriculture gm crops transgenic organisms

  1. pBAD-18-Cam

  2. pBCSK

  3. pUC 18

  4. pET

Show answer
Correct Option: C

Second generation vaccines are prepared by recombinant DNA technology. Which out of the following are the examples of such vaccines?

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

  1. Hepatitis B virus vaccine

  2. Herpes virus vaccine

  3. Salk's polio vaccine

  4. Both (A) and (B)

Show answer
Correct Option: D
Explanation:
Second generation vaccines are the vaccines which are prepared by recombinant DNA technique/ genetic engineering, e.g., hepatitis B virus vaccine, herpes virus vaccine and pneumonia vaccine. The yeast-derived recombinant hepatitis B virus vaccine is the first commercially available human vaccine produced by the genetic engineering technology. Hepatitis B vaccine is produced from transgenic yeast by recombinant DNA technology.
So, the correct answer is 'Both (A) and (B)'.

Golden rice is _____________________.

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

  1. A variety of rice grown along the yellow river in China

  2. Long stored rice having yellow cocur tint

  3. A transgenic rice having gene for $\beta$-carotene

  4. Wild variety of rice with yellow colored grains

Show answer
Correct Option: C
Explanation:

Golden rice is a transgenic variety of rice (Oryza Sativa) which contains good quantities of $\beta$-carotene ( provitamin A- inactive state of vitamin A). $\beta$-carotene is a principle source of vitamin A. Since the grains (seeds) of the rice are yellow in colour due to $\beta$-carotene, the rice is commonly called golden rice. 

The transgenic plant 'Flavr Savr' tomato carries an artificial gene for

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

  1. Delayed ripening process

  2. Longer shelf life

  3. Enhanced flavour

  4. All of these.

Show answer
Correct Option: D
Explanation:

Flavr Savr is a genetically modified tomato  for human consumption. The transgenic plant 'Flavr Savr' tomato carries an artificial gene for slowing down the ripening process of the tomato and thus prevent it from softening and retains its natural colour , flavour and its shelf life. 

So, the correct option is 'Option D' .

Match column I containing transgenic organisms with their specific characteristics in column II and select the correct answer from the given codes.
Column I                   Column II
A. Golden rice        (i) Protein-enriched milk
B. Bt cotton            (ii) Increased shelf life
C. Flavr Savr          (iii) Enriched with vitamin A
D. Rosie cow         (iv) High yield and pest resistant

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

  1. A-(iii), B-(iv), C-(ii), D-(i)

  2. A-(iii), B-(ii), C-(iv), D-(i)

  3. A-(ii), B-(iv), D-(iii), D-(i)

  4. A-(i_, B-(iv), C-(ii), D-(iii)

Show answer
Correct Option: A
Explanation:
Column I                   Column II
A. Golden rice        (iii) Enriched with vitamin A ( It is the improved variety of rice enriched with vitamin A).
B. Bt cotton             (iv) High yield and pest resistant ( Bt toxin are the toxins that kills harmful pests and responsible for high yield) .
C. Flavr Savr            (ii) Increased shelf life ( It is the improved variety of tomato that has long shelf life and causing them to soften ).
D. Rosie cow            (i) Protein-enriched milk ( Rosie is the first transgenic cow produced human protein rich milk i.e; 2.4 g per litres containing alpha-lactalbumin) .

So, the correct option is 'Option A' . 

Transgenic plants are the ones

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

  1. Grown on artificial medium after hybridisation in the field

  2. Produced after protoplast fusion in artificial medium

  3. Produced by somatic embryo on artificial medium

  4. Generated by introducing foreign DNA into a cell and regenerating plant from that cell

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Correct Option: D

In which variety of rice a gene synthesizing vitamin A (Beta Carotene) has been introduced? 

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

  1. Jaya

  2. Golden Rice

  3. Ratna

  4. lndrayani

Show answer
Correct Option: B
Explanation:

Golden rice is a variety of rice (Oryza sativa) produced through genetic engineering to biosynthesize beta-carotene, a precursor of vitamin A, in the edible parts of rice.

Golden/transgenic Rice is rich in ____________.

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

  1. Vitamin A

  2. Vitamin B

  3. Vitamin C

  4. Vitamin D

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Correct Option: A

The resistant variety of rice to bacterial blight is

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

  1. Jaya

  2. TMK-6

  3. IR-20

  4. IR-8

Show answer
Correct Option: D
Explanation:

  • Xanthomonas campestris causes bacterial blight of rice which is one of the most important diseases of rice in most of the rice-growing countries. Bacterial blight of rice has high epidemic potential and is destructive to high-yielding cultivars in both temperate and tropical regions especially in Asia.
  • IR8 is a high-yielding semi-dwarf rice variety developed by the International Rice Research Institute (IRRI) in the early 1960s. It is the resistant variety of rice to bacterial blight.
So, the correct answer is 'IR-8'

Hybrid of potato and tomato is

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

  1. Tomato

  2. Pomato

  3. Potamato

  4. None of the above

Show answer
Correct Option: B