He created plants for food I doubt it. Some people take the term soul and apply the wrong definition to the term.
I personally believe a soul is any living organism.
So, algae has a "soul".
No and that is not what the scriptures teach.
Gen 2:7 And Jehovah God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul.
Gen 1:21 And God created great sea-animals, and every living soul that creeps with which the waters swarmed after their kind; and every winged fowl after its kind. And God saw that it was good.
Every living organism over all is a soul.
So, shellfish have "souls"?