_ carry signals that control sexual development and reproduction.
photons sex hormones nerves Most plants organs orchids animals insects
A B C D E F G H
Chemical messengers carry signals from one nerve branch to another.
Sex hormones carry signals that control sexual development and reproduction.
_ carry signals that control sexual development and reproduction. (A) photons (B) sex hormones (C) nerves (D) Most plants (E) organs (F) orchids (G) animals (H) insects