List of top Plant Biotechnology Questions on Microbiology

Which of the following organism is a free living diazotroph?

Match List - I with List - II.

Choose the correct answer from the options given below:

Which are widely used techniques to fuse plant protoplasts?
A. Chemical fusion by PEG
B. Electric stimulation
C. High $Ca^{2+}$ -high pH method
D. Particle gun method
Choose the correct answer from the options given below:

The correct sequence of producing androgenic haploids of Nicotiana tabacum is:
A. Anthers burst to release the pollen derived embryo
B. Collection of flower buds
C. Isolation and growth of plantlets emerging from the anthers
D. Placing the anthers on the MS medium
Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Haploid plants can be produced through in vitro culture of plant gametic cells.
Reason (R): Accurate phenotyping in plant breeding with double haploidy is possible because of their segregating nature.
In the light of the above statements, choose the most appropriate answer from the options given below:

In vitro direct organogenesis using leaf explants involves which of the following processes?
A. Dedifferentiation
B. Embryo formation
C. Callus formation
D. Redifferentiation
Choose the correct answer from the options given below:

The coating of synthetic seeds need not to have the following quality for successful field plantation:

A virus-free plant could be regenerated from a virus-infected plant mainly through:

Media that contain some chemical with unknown chemical composition is called __________ media.

For obtaining pure cultures of bacteria __________ plate method is not used.

Symbiotic nitrogen fixing bacteria are found in -
A. Azolla
B. Gnetum
C. Anthoceros
D. Cycas
E. Riccia
Choose the correct answer from the options given below :

Which of the following converts nitrites to nitrates?

Nitrogen fixation occurs with the help of symbiotic bacteria in -
A. Pea
B. Lettuce
C. Beans
D. Tomato
E. Black gram
Choose the correct answer from the options given below :

Prions are the -

In cyanobacteria nitrogen fixation takes place in -