<span>Many mutations do produce changes in phenotype,I</span>t helps the bodies of the species to re-adapt to more locations and habitats.
Elodea cells change when aquarium water was supplanted with a hypertonic arrangement is the point at which the cell layer isolated from the cell divider and moved towards the center of the cell. The cytoplasm and chloroplas±s moved towards the center of the cell. The cell shrank and progressed toward becoming plasmolyzed.
The answer is true ......................
Osler's nodes are split pea–sized, erythematous, tender nodules located principally on the pads of the fingers and toes. They are few in number at any given time and occur in about 15% of patients with subacute bacterial endocarditis.
Hope this help if not so sorry
It’s main purpose is to protect the cell from its surroundings