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Whih part of a plant holds it upright and moves o towards the light?
Wiki User
∙ 14y ago
The stem.
Wiki User
∙ 14y ago
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What part of a plant holds it upright and moves it towards the sun?
stem
How does Euglena react to light?
it moves towards the light
How is a plant shoot positively photo tropic?
Phototropic is a word to describe if the plant moves towards light sources or away from light sources. Positively phototropic means it moves towards light. Most, perhaps all, plants will grow towards a light source. Plants need light energy so they have evolved to grow in the direction of the best light. Negatively phototropic means it moves away from light. Vampires are known to be negatively phototropic.
What happens to the frequency of light and its colour when objects travel towards you and away?
It will shift towards red ( becomes lower) as it moves away and towards blue as it approaches.
Where light comes from?
edison
What happens when a light moves from a material with a lower index of refraction to another material with a higher index of refraction?
The ray of light bends towards the normal.
Do lenses refract light?
when light falls from air on lens it undergoes refraction as lens is denser than air light on entering lens move towards normal and is bent and while leaving moves away from normal
How can astronomers determine whether a star is moving towards or away from earth?
Astronomers determine whether a star is moving toward or away from the Earth via the Doppler effect. Imagine a motorcycle moving past you. As it drives towards you, it has a higher frequency, and a lower frequency when it drives away. The same thing happens with light. As an object moves towards us, its light has a higher frequency and lower wavelength - this is called blueshift. As an object moves away from us, its light has a lower frequency and higher wavelength - this is called redshift.
What part of the microscope holds and moves the slides?
The Stage.
What is the difference between photo tactic and chemo tactic stimulus?
Taxis is an organism's instinctive movement either towards or away from a stimulant. Positive taxis occurs when an organism moves up a gradient, towards a stimulus. Negative taxis occurs when an organism moves down a gradient, away from a stimulus.Phototaxis occurs when an organism moves either towards or away from a light source. (That is, up or down a light gradient). The phototactic stimulus is the light itself (regardless of whether the organism moves towards or away from it).For example, a single-celled Euglena (a photosynthetic protist) exhibits positive phototaxis during the daytime: when exposed to sun, it moves from dim areas up the light gradient into bright sunshine. The phototactic stimulus is sunlight.Chemotaxis occurs when an organism moves either towards or away from a chemical source. (That is, up or down a chemical gradient). Thus the chemotactic stimulus is the source of the chemical (again, regardless of whether the organism moves towards or away from it).Interestingly, positive chemotaxis facilitates the process of fertilization in mammals. The egg secretes powerful chemical attractants, which the sperm swim towards enthusiastically as they make their way up the fallopian tube, like a hungry traveler following his nose to a bakery. For the sperm, the chemotactic stimulus is the chemical attractant secreted by the egg. (Check out this website for more info on this specifically: http://www.livescience.com/health/060519_sperm_attraction.html)
Which part of the seahorse help to steer in water?
it's tail helps them keep upright and moves them forward
What moves the cooler air towards the equator and warmer air towards the pole?
dryclimate
