The is the part of the nervous system that comprises the brain and spinal cord. a. autonomic nervous system b. somatic nervous system c. peripheral nervous system d. central nervous system

It's D as far as i can tell since i learned this in 10th

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!