Science Courses / Course / Chapter

Collenchyma Cells: Function, Definition & Examples

Lesson Transcript
Instructor: Derrick Arrington

Derrick has taught biology and chemistry at both the high school and college level. He has a master's degree in science education.

Collenchyma cells are elongated cells that have thick cell walls which serve to provide plants with structural support. Discover the full definition of collenchyma cells, and understand their function through examples of these cells. Updated: 09/08/2021

What are Collenchyma Cells?

Humans and animals have bones to provide support and structure. While plants don't have bones, they do contain a variety of structural cells that have different compositions and functions. In this lesson, we'll be taking a look at collenchyma cells, which help plants stay standing.

Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure. Their thick cell walls are composed of the compounds cellulose and pectin. These cells are often found under the epidermis, or the outer layer of cells in young stems and in leaf veins.

An error occurred trying to load this video.

Try refreshing the page, or contact customer support.

Coming up next: Conifers: Species, Types & Characteristics

You're on a roll. Keep up the good work!

Take Quiz Watch Next Lesson
 Replay
Your next lesson will play in 10 seconds
  • 0:00 What Are Collenchyma Cells?
  • 0:40 Function of Collenchyma Cells
  • 1:16 Types of Collenchyma Cells
  • 2:45 Lesson Summary
Save Save Save

Want to watch this again later?

Log in or sign up to add this lesson to a Custom Course.

Log in or Sign up

Timeline
Autoplay
Autoplay
Speed Speed

Function of Collenchyma Cells

Collenchyma cells provide structural support, protecting the plant by serving as an inner framework, much like bones do for humans and other animals. Plants are exposed to numerous structural challenges and without these cells, most plants would be too fragile to withstand the damage caused by heavy rains, high winds, and other stresses.

The thickened walls of the collenchyma cells enable them to provide additional support to the areas where they are found. Most notably, collenchyma cells serve growing parts of the plant, such as shoots and leaves, both by providing support and by filling in vacant spaces that will be used for later growth.

Types of Collenchyma Cells

Botanists typically classify collenchyma cells into four main types: angular, tangential, annular, and lacunar.

Angular collenchyma cells are given their names because their cell walls are thicker in the corners where they connect with other cells and thin in the middle, giving them an angular appearance. These cells are often found in leaves, giving them a bumpy texture. They have been notably studied in the leaves of celery plants.

To unlock this lesson you must be a Study.com Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use Study.com

Become a Study.com member and start learning now.
Become a Member  Back

Resources created by teachers for teachers

Over 30,000 video lessons & teaching resources‐all in one place.
Video lessons
Quizzes & Worksheets
Classroom Integration
Lesson Plans

I would definitely recommend Study.com to my colleagues. It’s like a teacher waved a magic wand and did the work for me. I feel like it’s a lifeline.

Jennifer B.
Teacher
Jennifer B.
Create an account to start this course today
Used by over 30 million students worldwide
Create an account