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What are the effects of the tropisms caused by light and gravity?
Wiki User
∙ 16y ago
A tropism is a growth response whose direction is determined by the direction of the stimulus. Growth towards the stimulus is called a positive tropism. Growth away from the stimulus is called a negative tropism. The response to light is called phototropism. Shoots are positively phototropic, roots are negatively phototropic. The response to gravity is called gravitropism (or sometimes geotropism). Shoots are negatively gravitropic and roots are positively gravitropic. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/Tropisms.html
Wiki User
∙ 16y ago
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What are tropisms and what do they demonstrate about plants?
Tropisms is the response to an external stimulus in a specific direction.
A plant seedling grows toward the window and its roots reach into the soil what type of movement does the seedling show?
These growth responses are called tropisms. Growing towards the light is called phototropism, and towards the source of gravity is geotropism.
What are the four tropisms?
Tropism is a biological phenomenon where an organism responds to the stimulus brought by the environmental factors. Some examples include: chemotropism, heliotropism, phototropism, thermotropism and electrotropism.
Which response occurs because of the hormone auxin?
The stimuli that plants respond to include light, water and gravity. Plants grow towards light (phototropism). Also in some plants the flowers will follow the sun as it moves across the sky. Plant roots grow towards water (hydrotropism). Plant roots grow towards gravity/towards the centre of the earth (geotropism). Source(s): I'm a biology teacher. this is bullcrap it is fake
What are the 4 plant tropisms?
OK there's 4 tropisms hydro tropism (when plant grows towards water) thigmatropism, (when plant grows towards touch) gravitropism (grows right side up is turned upside down) and photo tropism (grows towards light)
What are tropisms and what do they demonstrate about plants?
Tropisms is the response to an external stimulus in a specific direction.
What are tropisims?
Tropisms are slow growth responses . plants respond to things like light , gravity and water.
What are the effects caused by light gravity touch?
Touch : results mixture of stimuli heat , pain , pressure Light: You can see visible light is reflected objects around you Gravity:?
Name three stimuli to which plants respond?
gravity light and touch are the three stimuli for plant tropisms.
What do tropisms demostrate about plants?
Tropisms are plant's response to a particular stimulas. Tropisms demostrate that plants can response to light, water, gravity and chemicals. We, humans know what we want and with our knowledge we seek for it. Unlike humans, plants doesn't know what they want and how to look for it. So plants response to stimulus in order to get what they want and to survive. Plants turn towards light in order to make food. Tropisms helps plants to survive as plants cannot move and has no knowledge.
What is a positive and negative tropisms?
A positive tropism is something that bends with gravity or bends towards the light or the roots grow towards water. A negative tropism does the exact opposite.
What are the effects in over coming gravity?
you will float or u will be really light
What effects the speed of a object?
Speed is relative to the speed of light and gravity. So gravity could effect speed.
What of particles does gravity affect?
Gravity effects anything that has mass, period. This includes electromagnetic radiation. Even light bends in space because of gravity.
A plant seedling grows toward the window and its roots reach into the soil what type of movement does the seedling show?
These growth responses are called tropisms. Growing towards the light is called phototropism, and towards the source of gravity is geotropism.
What effects Einstein's General Theory of Relativity predicts that gravity has on light?
If light passes by a large mass gravity will pull it down a little, bending its trajectory. If light leaves a large mass gravity will "stretch" its wavelength (decrease its frequency)and if it falls into a large mass gravity will scruntch up its wavelength (increase its frequency).
What are the four tropisms?
Tropism is a biological phenomenon where an organism responds to the stimulus brought by the environmental factors. Some examples include: chemotropism, heliotropism, phototropism, thermotropism and electrotropism.
