Agricultural Biotechnology MCQs

Question 1

The closing of stomata is done by

Accepted Answer

ABA

Answer

Auxin

Answer

GA

Answer

Ethylene

Question 2

Transformation experiment was conducted by

Accepted Answer

Griffith, 1928

Answer

Harsy and Chase, 1968

Answer

Tatum, 1930

Answer

Beedle and Tatum, 1928

Question 3

Which phyto hormone is used for development of synthetic seeds?

Accepted Answer

A.B.A.

Answer

I.A.A.

Answer

G.A.

Answer

Ethylene

Question 4

Which one of the following cultures is stable, easier to regenerate and produces virus-free clonal plants?

Accepted Answer

Shoot tip

Answer

Cells from pith

Answer

Root tip

Answer

Phloem

Question 5

The requirements for chloroplast tranformation is

Accepted Answer

All of the above

Answer

Vector having chloroplast homology

Answer

Selectable marker gene aadA

Answer

Integration by homologous recombination

Question 6

In trp operon, attenuation occurs due to hair pin loop formation between

Accepted Answer

3 - 4 leader sequence

Answer

1 - 2 leader sequence

Answer

2 - 3 leader sequence

Answer

3 - 5 leader sequence

Question 7

Choose the correct statement.

Accepted Answer

Both A and C

Answer

The longer the chain length, the higher will be the melting point.

Answer

The shorter the chain length higher will be the melting point.

Answer

Greater the degree of unsaturation lower will be the melting point.

Question 8

A method used to insert DNA molecules into cells by using short electrical impulses is known as

Accepted Answer

Electroporation

Answer

Biolistics

Answer

Microinjection

Answer

Liposomes

Question 9

Golden rice was developed by

Accepted Answer

Ingo Potrykis

Answer

G. S. Khush

Answer

Alec Jaffery

Answer

M. S. Swaminathan