Gene Transfer in Plants

Question: Which of the following plant signal molecules regulate the expression of vir B, C, D and E in case of tobacco?
[A].

Acetosyringone

[B].

α-hydroxy syringone

[C].

Both (a) and (b)

[D].

None of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: On Ti-plasmid T-region or T-DNA is flanked by a direct repeat of
[A].

12 bp

[B].

20 bp

[C].

25 bp

[D].

30 bp

Answer: Option C

Explanation:

No answer description available for this question.

Question: Integrated octopine T DNA occurs as
[A].

single segment

[B].

two segments

[C].

three segments

[D].

four segments

Answer: Option B

Explanation:

No answer description available for this question.

Question: Integrated nopaline T-DNA occurs as
[A].

single segment

[B].

two segments

[C].

three segments

[D].

four segments

Answer: Option A

Explanation:

No answer description available for this question.

Question: In a plant tumour cell
[A].

complete Ti plasmid is incorporated in plant nuclear DNA

[B].

different parts of the Ti-plasmid are incorporated

[C].

only a small specific segment of callus T DNA is incorporated

[D].

may vary from plant to plant

Answer: Option C

Explanation:

No answer description available for this question.

Question: Opine synthesis is the property
[A].

conferred to plant cells when it transformed by Agrobacterium tumefaciens

[B].

determined by the bacteria Agrobacterium tumefaciens

[C].

both (a) and (b)

[D].

of normal plant cells

Answer: Option C

Explanation:

No answer description available for this question.

Question: Opines that are present in crown gall tumour include
[A].

octopine

[B].

nopaline

[C].

agropine

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Opines are
[A].

amino acid derivatives found in tumor tissues

[B].

amino acid derivatives found in normal tissues

[C].

amino acid derivatives found in both normal as well as tumor tissues

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: Crown gall tissue
[A].

can be cultivated in vitro in absence of bacteria

[B].

retains tumorous properties when cultivated

[C].

both (a) and (b)

[D].

shows tumorous properties only in presence of bacteria

Answer: Option C

Explanation:

No answer description available for this question.

Question: Agrobacterium tumefaciens is a
[A].

gram (+) bacteria

[B].

gram (-) bacteria

[C].

a fungi

[D].

a yeast

Answer: Option B

Explanation:

No answer description available for this question.