Which one of the following proved effective for biological control of nematodal diseases in plants?

• Pisolithus tinctorius

• Pseudomonas cepacin

• Gliocladium virens

• Gliocladium virens

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

• Frequent irrigation of the crop

• Treatment of the plants with cytokinins alongwith a small dose of nitrogenous fertilizer

• Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5- trichlorophenoxy acetic acid

• Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5- trichlorophenoxy acetic acid

Microbes found to be very useful in genetic engineering are

• Escherichia coli and Agrobacterium tumefaciens

• Vibrio cholerae and a tailed bacteriophage

• Diplococcus sp. and Pseudomonas sp

• Diplococcus sp. and Pseudomonas sp

Read the following four statements (I - IV) about certain mistakes in two of them
I .The first transgenic buffalo, Rosie produced mile which was human alpha - lactal bumin enriched
II. Restriction enzymes are used in isolation of DNA from another macro -molecules.
III. downstream processing is one of the steps of R-DNA technology.
IV. Disarmed pathogen vectors are also used in the transfer of R - DNA into the host. 
Which are the two statements having mistakes?

• Statement (II) and (III)

• Statements (III) and (IV)

• Statements (I) and (III)

• Statements (I) and (III)

Some of the characteristics of Bt cotton are 

• long fibre and resistance of aphids

• medium yield, long fibre and resistance to beetle pests

• high yield and production of toxic protein crystals which kill dipteran pests

• high yield and production of toxic protein crystals which kill dipteran pests