Examples of plant respiratory movement.

Examples of nose-moving plants, such as mimosa. When the mimosa is subjected to vibration or mechanical stimulation, the leaves will immediately close in pairs and droop, but after a period of time, the whole plant can be restored to its original state. This kind of movement caused by receiving mechanical stimulation is called earthquake-sensing movement. Earthquake motion is nose motion. Nasal movement is often manifested as local movement. Although the stimulation during exercise is different, the principle is the same.

Night-sensitive movement is the movement caused by the stimulation of light and temperature changes. Some night sports are caused by uneven growth.

For example, when the temperature of tulip flower rises from 7℃ to 17℃, the inner side of petal base grows faster than the outer side, and the flower opens; When the opposite changes, the flowers close. Another example is the inflorescence of dandelion and the petals of water lily, which open on sunny days and close on cloudy days or nights. Tobacco and mirabilis jalapa are the opposite. The nocturnal movement of flowers is conducive to flowering or insect pollination at a suitable temperature, and it is also the adaptability of plants to environmental conditions. However, some nocturnal movements are not growth movements, but movements caused by cell swelling and pressure changes. For example, some leguminous plants (peanuts, soybeans, acacia, etc. ) Close the lobules at night, the petioles droop and open again during the day.

Nasal movement means that the direction of plant movement has nothing to do with the direction of stimulation, which is called nasal movement, such as night sensitivity and earthquake sensitivity. As opposed to sexual movement, it is the result of plants adapting to the environment.

The leaves of some plants will close at night, droop and open again during the day, which is the so-called night sensation movement. Night sensation movement is caused by the change of temperature and light intensity. The nocturnal movement of peanut leaves is very sensitive. The leaflets of healthy plants are closed at night, and when the plants are sick or in inappropriate conditions, the leaves move slowly at night.