Answer:
It allows material to stay in and prevent outside material from entering
Explanation:
T. F. T. T. F. T. F. F. T. F. F.
Answer:
Letter A
Explanation:
From the description you make, it's likely that the structure with letter A is the chloroplast. It is round and small and it's free because of the pigment needed for photosynthesis (chlorophyll). It is located inside the cell, suspended in the cytoplasm.