The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner, are known as

ANS:B - rindgalls

Rind gall definition is - a defect in timber caused by the growth of annual layers of wood over a bruise in the bark.

Knots are cut or broken off limbs or sprout branches, green or dead, protruding, flush, or depressed, but with exposed sound or rotten wood.

So, the Answer is Rindgall.