List of top Plant Biotechnology Questions on Genetics and Evolution

The steps involved in the process of soyabean root nodule formation are:
A. Bacteria emits signals to stimulate root hairs to elongate
B. Cortex and pericycle cells begin division
C. Roots emits signals to attract Rhizobium
D. Bacteria within vesicles develop into bacteroids
Choose the correct answer from the options given below:

Which of the following secondary metabolites is not commercially produced in vitro in a plant cell culture system?

Match List - I with List - II.

Choose the correct answer from the options given below:

Haploid production in barley following interspecific hybridization usually involves:
A. Pollen collection and cross pollination
B. Embryo culture
C. Emasculation
D. Colchicine treatment
Choose the correct answer from the options given below:

Callus is defined as:

Plants having half the somatic chromosome number than found in normal individual are called -

Choose the correct statements regarding cytology of haploids -
A. A haploid in Arabidopsis will have 5 chromosomes.
B. Haploids are found as bivalents at metaphase-I of meiosis.
C. Haploids are found as univalent at metaphase-I of meiosis.
D. The haploids in maize will have 10 chromosomes.
E. The haploids in maize will have 20 chromosomes.
Choose the correct answer from the options given below :

Arrange the basic steps to develop G. M. O. (Genetically modified organisms) in sequence:
A. Transfer of DNA with desired genes to its progeny
B. Identification of DNA with desired genes
C. Introduction of the DNA into the host.
D. Maintenance of introduced DNA in the host.
Choose the correct answer from the options given below :

Choose the correct statements regarding Agrobacterium tumefaciens -
A. It is a gram positive round shaped bacterium
B. It is a gram negative rod shaped bacterium
C. It is a photosynthetic spiral bacterium
D. It is also known as 'Natural genetic Engineer'
E. It is capable of naturally transferring DNA into plant genome
Choose the correct answer from the options given below :

In general, the cytoplasmic male sterility (CMS) causing genes are transcribed in which plant cell organelle?