Your answer would A insects because insects are the only invertebrates that can maintain flight. FOr example Butterflies and Flies Can maintain flight
Hope this has helped :)<span />
Answer:
What do you mean by I control all metabolic activities of the cell
I just found this by searching for "mushroom diagram".
Concentration gradient differs whether the solution is greater or lesser anticipating if it's hypertonic, hypotonic, or isotonic.