One of the alternative sources of protein for human and animal nutrition is ........ .

Which branch is useful for cultivating a large number of microorganisms for the production of Single Cell Protein $(SCP)$?

Astronauts use $.....$ as a food supplement.

Single Cell Protein $(SCP)$ is obtained through which process?

Which microorganism produces $200$ grams of protein in a single day?

Consider the following statements $(I-IV)$ and select the option containing the correct answer.
$I.$ The unicellular $Spirulina$ can produce large quantities of food rich in protein,minerals,and vitamins.
$II.$ Based on body weight,the microorganism $Methylophilus$ $methylotrophus$ can produce much more protein in a day than a cow.
$III.$ Common button mushrooms are a rich source of Vitamin-$C$.
$IV.$ $A$ variety of rice has been developed that is rich in calcium.