--%>
Assignment Help - homework help

Description of phototropism

Give a brief description of phototropism?

E

Expert

Verified

Phototropism is movement of the plant structures in response to light. Phototropism might be negative or positive. Positive phototropism is that in which plant movement (or growth) is towards the light source and negative phototropism is that in which movement (or growth) is inverse, away from light source.

Phototropism relates to auxins because the exposition of one side of plant to light creates these hormones concentrate in darker side. This fact creates the auxin action on the stem to be positive, that is, the growth of the darker side is more intense and plant arcs towards the lighter side. In the root (when submitted to the light, in general experimentally) the auxin action is negative (over positive range), growth of the darker side is inhibited and root curves towards this side.

   Related Questions in Biology

  • Q : Enzymatic reactions-graphic curve of

    Regarding the enzymatic reactions, how different are the graphic curve of variation of speed of a reaction as function of substrate concentration and curve of variation of speed of a reaction as function of temperature?

    		•
  • Q : Cnidarians discuss how polymorphism in

    discuss how polymorphism in the cnidarians might have influenced adaptive radiation of the group

    		•
  • Q : Evolutionary cephalization With the

    With the examples of invertebrate nervous systems, how process of the evolutionary cephalization can be explained?

    		•
  • Q : Define the term nitrogen wastes Define

    Define the term nitrogen wastes? Answer: Nitrogen wastes are residuals, derived from the degradation of proteins. They are made up from chemical transformation of am

    		•
  • Q : Classification of immune response Into

    Into how many kinds is immune response classified?

    		•
  • Q : What is Multimedia Training Multimedia

    Multimedia Training: It is an instructional system which incorporates both web-based and digital media course delivery and explains any application which uses graphics, animation, text, audio and video. Such applications employ high-bandwidth media (t

    		•
  • Q : Explain Operating Infrastructure

    Operating Infrastructure: All businesses encompass some fundamental rules which depend on to function efficiently. In small businesses, such rules are implemented in the form of an oral representation at the time of employment of a fresh employee to t

    		•
  • Q : Respiration in fishes and in adult

    How dissimilar are the respiration in fishes and the respiration in adult amphibians?

    		•
  • Q : Alcoholic fermenting organisms in

    Why in cake and bread manufacture, alcoholic fermenting organisms are employed and not lactic fermenting organisms?

    		•
  • Q : Growth tissues of plants Write down the

    Write down the growth tissues of the plants? How do they categorize and where can they be found?

    		•