I need serious help about dandelion stem

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    • #356
      novastar_
      Participant

      why does the stem curve immediately after cutting?

    • #19392
      novastar_
      Participant

      Please, can some kind, smart souls help me? my homework’s due tomorrow….. 😥

    • #19396
      mith
      Participant

      Is it because there’s a lack of pressure in the stem and that causes the stem to lose rigidity?

    • #19399
      ERS
      Participant

      turgor pressure, to be more specific.
      ERS

    • #19400
      novastar_
      Participant

      Why is there a lack of tugor pressure?

    • #19416
      mith
      Participant

      Imagine a balloon( the long ones). It’s pretty rigid right? Now pop the balloon or cut it in half. The rubber isn’t rigid anymore right?

    • #19422
      novastar_
      Participant

      I see, but y is it curved unevenly? the outer layer becomes shorter than the inner layer…… is it because the outer layer tends to lose water to its surroundings easily?

    • #19436
      mith
      Participant

      What do you mean curve unevenly? Is there an even curving? I’m thinking if a plant stem goes limp, it just kinda curves depending on how the flower is balanced.

    • #19557
      novastar_
      Participant

      is it because of a lack of turgor pressure in the cortex cells?

    • #19559
      RobJim
      Participant

      I see, but y is it curved unevenly? the outer layer becomes shorter than the inner layer…… is it because the outer layer tends to lose water to its surroundings easily?

      It kind of sounds like you’re saying the end of the cut stem expands wider, like a trumpet, or bell bottom pants; in other words, the walls curve outward, but the stem as a whole doesn’t curve. If that’s the case then the answer is probably that the inside of the stem is under high pressure, and when the inside is exposed to atmospheric pressure the inside part of the stem expands. This would cause the walls of the stem to curve outwards in the same way that a bimetallic strip bends when the temperature is changed.

      I don’t really know, but this would explain it if that’s what you meant.

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