ADJECTIVES QUIZ | EXAMIANS

The transfer of intermediate vectors into Agrobacterium are brought about by

triparental mating

biparental mating

transformation

transduction

TRUE ANSWER : ?
YOUR ANSWER : ?

Crown gall tissue

can be cultivated in vitro in absence of bacteria

both (a) and (b)

retains tumorous properties when cultivated

shows tumorous properties only in presence of bacteria

TRUE ANSWER : ?
YOUR ANSWER : ?

Integrated octopine T DNA occurs as

two segments

three segments

single segment

four segments

TRUE ANSWER : ?
YOUR ANSWER : ?

Vir genes required for the T-DNA transfer and processing are located

on the T-DNA

outside the T-DNA region

on the plant genome

none of these

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YOUR ANSWER : ?

Which of the following is true about Agrobacterium tumefaciens?

All of these

It infects gymosperms

It infects dicotyledonous angiosperms

It causes crown gall disease of plants

TRUE ANSWER : ?
YOUR ANSWER : ?

Integrated nopaline T-DNA occurs as

three segments

single segment

four segments

two segments

TRUE ANSWER : ?
YOUR ANSWER : ?

The direct repeats flanking the T-DNA of Agrobacterium tume-faciens are known as

cos site

flanking sequences

transfer sequences

border sequences

TRUE ANSWER : ?
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In a plant tumour cell

complete Ti plasmid is incorporated in plant nuclear DNA

may vary from plant to plant

only a small specific segment of callus T DNA is incorporated

different parts of the Ti-plasmid are incorporated

TRUE ANSWER : ?
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The left segment of octopine T-DNA (TL) is necessary for

enzymes for agropine biosynthesis

all of these

conjugative transfer

tumour formation

TRUE ANSWER : ?
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Intermediate vectors containing T-DNA are conjugation deficient. Thus conjugation is mediated in presence of which of the following plasmid?

either (a) or (b)

none of these

pRK 2013

pRN 3

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