Give examples of irritability in animals and plants.

Examples of irritability in plants:
* phototropisms – the direction of growth; arrangement of leaf blades (leaf mosaic); an increase in the number of chloroplasts; turning leaves behind the sun
* geotropism – the growth of the root down, and the stem up
* chemotropism – opening and closing of flowers; lowering of the leaves of mimosa when touched; closing of sundew leaves when insects enter them
Examples of irritability in animals: avoidance of danger; teaching youngsters how to hunt and camouflage; movement towards food; singing birds in the morning, watching for prey; the facial pits of rattlesnakes perceive infrared radiation; fish have electroreceptors; bats are guided by ultrasound; predatory animals are guided by smells, with the help of hearing.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.