What is the first step in the life cycle of a plant that reproduces sexually?
a new plant develops.
a seed is produced.
the seed falls to the ground and germinates.
a sperm cell fertilizes an egg cell.

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.