{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ROOTDEV.018 - Jim Bidlack BIO 5354/4354 PLANT ANATOMY...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Jim Bidlack - BIO 5354/4354 PLANT ANATOMY Lecture 18 - Root Meristem Root Cap, & Root Development I. Root tip and subapical meristems A. Area of division - a bit back from the root tip because there is division in front of and in the back of the zone of division B. Stuff at or near the area of division (zones) 1. Central cylinder meristem zone 2. Cortical initials zone 3. Central cells zone 4. Columella mother cells zone C. Histogen theory - plant tissue derived from one massive meristem divided into precursors - meristem sometimes referred to as SUBAPICAL MERISTEM 1. Dermatogen ===> protoderm ===> epidermis 2. Plerome (central cylinder zone) ===> procambium ===> vascular tissue 3. Periblem (cortical initials) ===> ground meristem ===> ground tissue 4. Calyptrogen (columella) ===> root cap D. Types of subapical meristems 1. Closed (2-4 zones: plerome, periblem, calyptrogen) - grasses & many dicots 2. Open (subapical meristem can be hard to distinguish) - LVP a) Sometimes the subapical meristem can be limited to one cell b) LVPs - often limited to one "Mother Cell" 3.
Image of page 1
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