Why do a large number of people in India suffer from 'hidden hunger'? Provide a scientific reason.

Identify the incorrect statements from the following:
$(i)$ Increasing milk production capacity is an objective of animal breeding.
$(ii)$ Breeds of each domesticated animal show variations in their characteristics.
$(iii)$ Out-crossing involves breeding between a male and a female of two different species.
$(iv)$ $A$ mule is an example of interspecific hybridization.

The common name of $Leucaena \ leucocephala$ is

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.

$(a)$ 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.

Select the incorrect pair.