Definition
Movement in Plants
Chemical Coordination
There is no Nervous System in Plants. The control and coordination is done by chemicals. Special chemical called hormones are secreted which have different purposes to transmit information in all of the cells, unlike nervous system, where the transmission is limited to the neurons and the cells near it.
Hormones in Plants
- Auxin - Promotes cell enlargement in shady part of the tip of the shoot. Helps in growth
- Gibberellins - Promotes cell enlargement and growth
- Cytokinin - Promotes cell division.
- Abscisic Acid - Stops plant growth, causes wilting of leaves
- Ethylene - Stops plant growth
Backlinks
Flashcards
What are nastic movements? ? Movements independent of growth, like response to a stimulus.
What are tropic movements? ? Movements related to growth
- Photo-tropism - Light
- Geo-tropism - Gravity
- Chemo-tropism - Chemicals
- Hydro-tropism - Water
How do plants coordinate? ? There is no Nervous System in Plants. The control and coordination is done by chemicals. Special chemical called hormones are secreted which have different purposes to transmit information in all of the cells, unlike nervous system, where the transmission is limited to the neurons and the cells near it.
Hormones in Plants? ?
- Auxin - Promotes cell enlargement in shady part of the tip of the shoot. Helps in growth
- Gibberellins - Promotes cell enlargement and growth
- Cytokinin - Promotes cell division.
- Abscisic Acid - Stops plant growth, causes wilting of leaves
- Ethylene - Stops plant growth