sorry I know that cilia Are the locomotory structure of paramecium I don't know according to the respiratory system but for paramecium, it creates a current in gullet and helps the microbes to engulf the food
The opponent process theroy of color vision recommends that our capacity to perceive color is constrained by three receptor complexes with contradicting or opposing activities.
These three receptor complexes are as follows:
Dark white complex.
Blue-yellow complex.
Red-green complex.
You don't see greenish-red because according to the opponent process theory, the opponent cells can just identify each of these colors at a time.
