Gene Transfer in Plants MCQs

Question 1

Opines are

Accepted Answer

amino acid derivatives found in tumor tissues

Answer

amino acid derivatives found in normal tissues

Answer

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

Answer

none of the above

Question 2

Which of the following is true about Agrobacterium tumefaciens?

Accepted Answer

All of the above

Answer

It causes crown gall disease of plants

Answer

It infects gymosperms

Answer

It infects dicotyledonous angiosperms

Question 3

In the liposome mediated gene transfer in plants, nucleic acids are

Accepted Answer

both (a) and (b)

Answer

protected from nuclease digestion

Answer

stable in liposomes

Answer

not stable in liposomes

Question 4

Advantage of microprojectile method over microinjection method for gene transfer in plants include

Accepted Answer

all of the above

Answer

intact cells are used

Answer

method is universal in its application irrespective of all shape, size, type and presence or absence of cell wall

Answer

gene can be transferred to many cells simultaneously

Question 5

On Ti-plasmid T-region or T-DNA is flanked by a direct repeat of

Accepted Answer

25 bp

Answer

12 bp

Answer

20 bp

Answer

30 bp

Question 6

Agrobacterium tumefaciens is a

Accepted Answer

gram (-) bacteria

Answer

gram (+) bacteria

Answer

a fungi

Answer

a yeast

Question 7

Microprojectile method of gene transfer in plants involves delivery of DNA

Accepted Answer

with the help of bolistics

Answer

with the help of micromanipulator

Answer

with the help of needles

Answer

any of the above

Question 8

Which of the following genes are constitutively expressed and control the plant induced activation of other vir genes?

Accepted Answer

vir A and vir G

Answer

vir C and vir D

Answer

vir B and vir E

Answer

vir A and vir B

Question 9

Integrated octopine T DNA occurs as

Accepted Answer

two segments

Answer

single segment

Answer

three segments

Answer

four segments