Q8) Organisms depend on hormones as well as electric impulses for the transmission of signals from the brain to the rest of the body. What can be a likely advantage of hormones over electric impulses? (a) It is secreted by all types of cells present in the body. (b) It is secreted by stimulated cells and reaches all cells of the body. (c) It is relayed to the target organ at a faster rate than electric impulses. (d) It does not depend on an external stimulus to be generated in the cells.
An organism needs control and coordination system for the following functions : (i) To save the body of the organisms from the harmful changes in the environment. (ii) To control the speed of voluntary and involuntary actions. (iii) To have the capability to think and learn for responding to any stimuli.
