1.
One of the major difficulties in the biological control of insect pest is that the
2.
Study the following flow chart that shows curd formation from milk and select the correct option for A and B
Milk is incubated with curd

LAB shows growth in milk

Production of …..A…..

Coagulation and digestion of milk protein

Improved nutritional quality by increased ….B….
 
3.
Pencils are prepared from the wood of
4.
Rauwolffia serpentinais used in 
5.
Agriculture by using only biofertilisers is called
6.
Penicillin is the first antibiotic. It was discovered by
7.
In paddy fields biological nitrogen fixation is chiefly brought by
8.
Superiority of hybrid over parents is
9.
Which of the following insecticides is obtained from the roots of Derris elleptica ?
10.
Which of the following bacteria is present in the rumen of cattle?