PAR&COLE.010 - Jim Bidlack - BIO 5354/4354 PLANT...

Info iconThis 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 10 - Parenchyma and Collenchyma I. Location and function of parenchyma ("beside" tissue) A. Where it's found 1. Main representative of ground tissue 2. Cortex and pith of stems 3. Cortex of roots 4. Ground tissue of petioles 5. Mesophyll of leaves 6. With xylem and phloem B. What it does 1. Capable of changing function 2. Can go through resumption of meristematic activity to enable a) Wound healing b) Regeneration c) Adventitious roots and shoots d) Grafts e) Tissue culture II. Types of parenchyma A. Chlorenchyma - photosynthetic (found in leaf mesophyll) B. Storage - starch and oil (seeds and fruits); have amyloplasts, chromoplasts, and accumulate stuff in vacuole (anthocyanins, tannins, crystals) C. Aerenchyma - have intercellular air spaces (stem, petiole, midrib) D. Sclerified - have primary and secondary walls (some seeds; asparagus and persimmon) 1. Secondary wall is thinner than that of sclerenchyma and is composed of cellulose and lignin 2. Sclerified parenchyma are alive.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/27/2012 for the course BIO 5354 taught by Professor Bidlack during the Fall '11 term at University of Florida.

Ask a homework question - tutors are online