5. Why do thorns and spines exist? * O To stop animals from eating plants
To stop insects from pollinating
To stop people from looking at plants
O To help plants stay standing upright and give them their shape

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.