Sunflower is primarily cultivated for which of the following?

Identify the correct statements:
$(i)$ Modern techniques are implemented to increase the production of plants and animals in marine habitats.
$(ii)$ Catla,Rohu,Mrigal,Hilsa,and Major Carps are types of fish.
$(iii)$ Hilsa,Sardines,Rohu,and Mrigal are marine edible fish.
$(iv)$ Fisheries can be of saltwater or freshwater types.

Which one of the following is a pest of tobacco?

Regulations governing the movement of diseased plant material are called:

Which of the following is an incorrect pair regarding the major dairies of Gujarat?

$(a)$ Mutations are beneficial for plant breeding. Taking an example,justify the statement.
$(b)$ Discuss briefly the technology that made us self-sufficient in food production.