Agranal chloroplast are found in

The correct option is B Green algae
Chloroplast has a coin-shaped structure which is known as thylakoids which are placed one above the another to form stacks known as grana. Certain chloroplasts do not form grana. E.g., chloroplasts in guard cells and in algal cells. Due to nuclear gene mutation, grana stacking in both lower and higher plants is affected.

So, the correct answer is option C.