Biotechnology and its Applications Test

Result

Biotechnology and its Applications Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Host plant generated dsRNA triggers protection against

A
Nematode infestation

B
Rhizobium infestation

C
Bacterial infestation

D
Nostoc infestation

Solution

Host plant generated dsRNA triggers protection against nematode infestation. The parasite do not survive in transgenic host expressing specific interfering RNA.
Question 2
1 / -0

Bt is short form of

A
Bacillus tetracycline

B
Bacillus thuringiensis

C
Bacterium tetracycline

D
Bacterium thuringiensis

Solution

Bt is short form of Bacillus thuringiensis that produce Bt toxin that kills the insects and nematodes.
Question 3
1 / -0

Gene for antisense polygalactouronase will lead to

A
Delayed ripening

B
Drought resistance

C
Pest resistance

D
Herbicide resistance

Solution

The gene for antisense polygalactouronase introduced into a plants leads to delayed ripening of fruit to prevent spoiling of fruit.
Question 4
1 / -0

Seeds of golden rice are yellow in colour because

A
It has vitamin B encoding gene

B
Provitamin A is produced in the entire grain

C
It has vitamin E encoding gene

D
It is a biproduct of 3 genes

Solution

The seeds of golden rice are yellow in colour due to presence of provitamin A in entire gene. This rice is natural source of vitamin A along with starch and proteins.
Question 5
1 / -0

RNAi helps in producing pest resistant plants as there is the formation of

A
ssRNA

B
dsDNA

C
ssDNA

D
dsRNA

Solution

RNA interference (RNAi) is present in all eukaryotic organisms. It involves silencing of a specific mRNA due to complementary dsRNA molecules that binds and prevents translation of the mRNA.
Question 6
1 / -0

Flavr Savr tomato is produced

A
to enhance self-life of fruits

B
for frost resistance

C
for pest resistance

D
for herbicide tolerance

Solution

Flavr Savr tomato has thick fruit coat that enhance the self-life of the fruits and do not get spoiled soon. Common Indian tomato have thin coat and easily get destroyed during transportation and handling.
Question 7
1 / -0

GM Arabidopsis produces dsRNA to

A
To produce more protein product

B
To stop transcription

C
To make DNA non functional

D
Knock out specific parasitic genes in the nematode

Solution

Genetically modified (GM) Arabidopsis produces double stranded RNA to knock out specific parasitic genes in the nematode that harms the crops by silencing specific mRNA of nematodes.
Question 8
1 / -0

Cry genes introduced in a plant will not be affective against

A
rodents

B
hymenoptera

C
coleoptera

D
lepidoptera

Solution

Cry gene produce toxin protein that chocks the gut of insects in presence of alkaline pH to cause death of insects. It is not effective against rodents.
Question 9
1 / -0

The cry1Ac gene in Bt Brinjal is under the transcriptional control of an enhanced cauliflower mosaic virus 35S (CaMV35S) promoter, which ensures

A
its concentration

B
the gene is expressed in all the Brinjal tissue throughout its complete life-cycle

C
control of the terminator

D
its specificity

Solution

Mahyco licensed and used the cry1Ac gene obtained from Monsanto and two supporting genes (nptII and aad). The cry1Ac gene is under the transcriptional control of an enhanced cauliflower mosaic virus 35S (CaMV35S) promoter, which ensures the gene is expressed in all the brinjal's tissue throughout its complete life cycle. NptII and aad are selectable marker genes, nptII is used to identify transgenic plants from non-transgenic, and aad is used to identify the transformed bacteria used during the development of the construct. Aad contains a bacterial promoter and is not expressed in the Bt brinjal. The completed construct was inserted into young cotyledons from the brinjal plants using an Agrobacterium-mediated technique.
Question 10
1 / -0

Agrobacterium naturally inserts DNA into plants by

A
Its Ti plasmid

B
Antibiotic resistant genes

C
DNA

D
Marker gene

Solution

Using Agrobacterium vectors, nematodes-specific genes were introduced into the host plant. Agrobacterium naturally inserts DNA into plants by its Ti plasmid.

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Re-Attempt Weekly Quiz Competition

Biotechnology and its Applications Test - 4

Result

Biotechnology and its Applications Test - 4

Score

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Rank

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SHARING IS CARING

Question 1

Nematode infestation

Rhizobium infestation

Bacterial infestation

Nostoc infestation

Solution

Question 2

Bacillus tetracycline

Bacillus thuringiensis

Bacterium tetracycline

Bacterium thuringiensis

Solution

Question 3

Delayed ripening

Drought resistance

Pest resistance

Herbicide resistance

Solution

Question 4

It has vitamin B encoding gene

Provitamin A is produced in the entire grain

It has vitamin E encoding gene

It is a biproduct of 3 genes

Solution

Question 5

ssRNA

dsDNA

ssDNA

dsRNA

Solution

Question 6

to enhance self-life of fruits

for frost resistance

for pest resistance

for herbicide tolerance

Solution

Question 7

To produce more protein product

To stop transcription

To make DNA non functional

Knock out specific parasitic genes in the nematode

Solution

Question 8

rodents

hymenoptera

coleoptera

lepidoptera

Solution

Question 9

its concentration

the gene is expressed in all the Brinjal tissue throughout its complete life-cycle

control of the terminator

its specificity

Solution

Question 10

Its Ti plasmid

Antibiotic resistant genes

DNA

Marker gene

Solution

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