Plant Biotechnology MCQs

Question 1

Match the promoters Listed in Group I with the tissues listed in Group II Group I Group II P. α-Amylase 1. Endosperm Q. Glutenin 2. Tuber R. Phaseollin 3. Aleurone S. Patatin 4. Cotyledon

Accepted Answer

P-3, Q-1, R-4, S-2

Answer

P-3, Q-4, R-1, S-2

Answer

P-4, Q-2, R-1, S-3

Answer

P-1, Q-3, R-2, S-4

Question 2

The transplastomic plants bear no risk for gene transfer through pollens as

Accepted Answer

The transformed genomic DNA are inherited maternally

Answer

The pollens degenerate before fertilization

Answer

The transformed mitochondrial DNA is lost during pollen maturation

Answer

The transformed chloroplast DNA is lost during pollen maturation

Question 3

Which of the following statements is most appropriate for recombinant antibody production in transgenic plants?

Accepted Answer

Such antibodies are free from other antigen of animal origin

Answer

A very high level expression is always obtained

Answer

Light promote more antibody production

Answer

Functional antibody cannot be produced in plants

Question 4

What would he the effect of addition of 2, 4-D on the production of berberine by cell culture of Thalictrum minus?

Accepted Answer

None of the above

Answer

To stimulate growth and thereby urease secondary metabolite production

Answer

Stimulate dedifferentiation and thereby decrease secondary metabolite production

Answer

Stimulate proliferation and reduce secondary metabolite production

Question 5

Multiplication of genetically identical copies of a cultivar by asexual reproduction is known as

Accepted Answer

Clonal propagation

Answer

Aclonal propagation

Answer

Vegetative propagation

Answer

Polyclonal propagation

Question 6

Which one of the following is a second generation genetically engineered crop?

Accepted Answer

Golden rice

Answer

Bt brinjal

Answer

Roundup soyabean

Answer

Bt rice

Question 7

Which of the following combinations of plant hormones and their associated function are correct? Hormone Function P. Abscisic acid 1. Breaks seed dormancy Q. Auxin 2. Induces cell division R. Ethylene 3. Stimulates ripening of fruits S. Gibberellin 4. Promotes seed dormancy

Accepted Answer

Q and R only

Answer

P and R only

Answer

P and S only

Answer

Q and S only

Question 8

Tobacco leaf discs are transferred with Agrobacterium tumefaciens strain containing binary vector (GUS as reporter gene) with selectable marker neo (kanamycin resistance gene) and then regenerated to plants. The plants are kanamycin resistant, but leaf tissues are negative to GUS assay. The explanation is

Accepted Answer

All the above

Answer

The plants are transformed for both genes but GUS gene is turned

Answer

The plants are transformed for only neo gene not the GUS gene

Answer

The plants are not transformed at all, but the development of kanamycin resistance is due to somaclonal variation

Question 9

The plant hormone indole-3-acetic acid is derived from

Accepted Answer

Tryptophan

Answer

Histidine

Answer

Tyrosine

Answer

Proline