Torulopsis utilis is

An alga which can be employed as food for human beings is

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

People recovering from a long illness are advised to include the alga $Spirulina$ in their diet because it:

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.

$S$ - Statement: Heterotrophic mushrooms are cultivated globally.
$R$ - Reason: $A$ $250 \ kg$ cow produces $200 \ kg$ of protein daily.