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100 lessons,
4h 52m
What is Phototropism?
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In this bytes video get to know what phototropism means and what's the mechanism behind it. For Hindi version click on -

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Thankyou sir for this wonderful course.i really appreciate your are a great teacher,your explanation is very logical,thats why i was able to understand history as soon as i went through the crash course on modern history. Not only i regularly go through your courses,but i enjoy them,i watch ur videos with a smile,thanks to ur way of teaching.before ur crash couse on modern history, i was terrible at history,was only an engineering student but now i eagerly wait for ur interesting videos. GOD BLESS YOU SIR,ur the greatest teacher ive ever come across my life.
i know about this topic but it helps me in the depth of topic
please mam make aa video on large hydron colider m/c
a video on penicillin would be good
Make a video on Glyphosate
  1. What is Phototropism?

  2. If you put a plant in a window, you may notice that after a few days, it has bent toward that window

  3. Seedlings of plants grow straight upward in dark environments in order to reach the sunlight above ground However, if the amount of light is the same on all sides of the plant, then it will continue to grow straight upward instead of bending.

  4. Sun There are several signaling molecules that help the plant determine where the light source is coming from which helps the plant. Light Cells on far side elongate under influence of auxin, bending plant towards light Auxin moves away from light Shoot exposed to sunligh ection to sunlight

  5. The very tip of the plant known as the coleoptile is necessary in light sensing. The middle portion of the coleoptile is the area where the shoot curvature occurs.