Identify the odd one out.

The toxicants which kill the pests on coming in direct contact are known as

Consider the following statements:
$I$. The progeny of cross-breeding may be used for commercial production.
$II$. In case of artificial insemination,the semen can be used immediately or can be frozen for later use.
$III$. Controlled breeding experiments are carried out using artificial insemination and multiple ovulation embryo transfer technology.
Which of the statements given above are correct?

Green manuring enhances crop yield by

Which is the cheapest but most energy-providing fruit?

Read the following statements carefully and select the correct ones:
$(1)$ The wheat variety $Atlas$ $66$ has high protein content.
$(2)$ $SCP$ is an alternative source of protein for human and animal nutrition.
$(3)$ Plants developed through micropropagation are genetically different from the parent plant.
$(4)$ Semi-dwarf rice varieties were derived from $IR-8$ and $Taichung$ $Native-1$.