A student noted the following points regarding Agrobacterium tumefaciens: A. A. tumefaciens is a gram-negative soil bacterium. B. Opine catabolism genes are present in T- DNA region of Ti-plasmid. C. […]
Tag: CSIR NET Life Science Previous Year Questions on applied biology
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CSIR NET Life Science Previous Year Questions and Solution on applied biology
Opines and Agrobacterium virulence
Which one of the following statements is correct? (1) None of the virulence genes of Agrobacterium tumefaciens are expressed constitutively. (2) Integration of T-DNA with the nuclear genome of plant […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Essential and non‑essential genes for Agrobacterium‑mediated plant transformation
Agrobacterium tumefaciens is frequently used as a vector to create transgenic plants. Under laboratory conditions Agrobacterium – mediated plant transformation does not require (1) host plant genes (2) bacterial type […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Interpreting T‑DNA hormone genes in Agrobacterium tumefaciens
The T-DNA region of the Ti plasmid of Agrobacterium tumefaciens harbors two genes: X and Y. Mutation of gene ‘X’ produces a rooty tumour while mutation of gene ‘Y’ produces […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Which molecule activates Agrobacterium vir genes?
A set of virulence genes (vir genes), located in the Agrobacterium Ti-plasmid, is activated by (1) octopine (2) nopaline […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Why acetosyringone is used in Agrobacterium‑mediated plant transformation
Treatment of acetosyringone is given during transfer of transgene using Agrobacterium as vector. The rationale behind this is that acetosyringone (1) Helps in anchorage of bacteria to plant cell wall […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Bacillus thuringiensis as a biocontrol agent against insect pests
Which microbe has been used against insect plant pathogens? (1) Agrobacterium tumefaciens (2) Agrobacterium rhizogenes (3) Bacillus thuringenesis (4) Fusarium nudum Why Bacillus thuringiensis is correct Bacillus thuringiensis (Bt) is […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Agrobacterium tumefaciens as the primary tool for generating transgenic plants
Which of the following organism have been extensively used in generation of transgenic plants? (1) Agrobacterium tumfaciens (2) Bacilus thuringensis (3) Baculo viruses […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Which hormone delays Arabidopsis seed germination on MS medium?
Arabidopsis thaliana seeds were planted on Murashige Skoog (MS) plates with or without a hormone added to the medium. Seeds were found to germinate late in the hormone containing MS […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Key facts about protoplast fusion in plant tissue culture
Protoplast fusion is used in plant tissue culture for various applications. In protoplast fusion: A. naked plant cells are used. B. transfer of organelles is not possible. C. partial genome […]
