Tissue collections that carry out specific functions are called A. Cells
B. Organs
C. Organ Systems
D. Organisms

B. organs is the right one

Explanation:

brainliest plss1

B. Organs

Explanation:

Cells make up tissues. Tissues make up organs. Organs then make up organ systems, which make up organisms. Hope this helps!

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

answer; i believe the correct answer is (replication is not conservative);