{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

BIO 1002 Chapter 26 Plant Responses

BIO 1002 Chapter 26 Plant Responses - Chapter 26 Plant...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 26: Plant Responses to the Environment Plants perceive and respond to environmental stimuli by regulating growth and development through the action of chemicals called plant hormones or growth regulators. Plants can senses changes in their environment and adjust themselves. A. Plants respond to: 1. Gravity a. Roots grown down if you turn a plant on it’s side 2. Light a. Circadian rhythm: senses light and moves toward where the sun is facing using plant hormones 3. Wind 4. Predators(bacteria, fungi, viruses, animals) 5. Touch B. How does the plant bend? 1. *Phototropism: bending of plant toward light, 1 st plant response studies 2. Cells elongate at different rates on opposite sides of plant, causing bending (the dark side is where the growth occurs); Charles Darwin was the first to observe this and record it in writing 3. Mechanism discovered by Peter Boysen-Jensem a. Chemical produced in the tips that moves down causing cell elongation 1)
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern