Homework Help

In plants, what is the name of the thick layer of cells NEXT TO the epidermis?

user profile pic

babfootball82 | Honors

Posted March 11, 2013 at 8:19 PM via web

dislike 1 like

In plants, what is the name of the thick layer of cells NEXT TO the epidermis?

1 Answer | Add Yours

user profile pic

belarafon | High School Teacher | (Level 2) Educator Emeritus

Posted March 11, 2013 at 8:56 PM (Answer #1)

dislike 1 like

A plant epidermis serves much the same function as those on an animal; the single layer of cells contains the inner parts of the plant, protecting them from outside damage. Directly adjacent to the epidermis is the cortex, a thicker row of undifferentiated cells that help protect the inside of the plant, differentiate to help heal and contain damage, and also may contain chloroplasts to aid in photosynthesis. Cortex cells help fix the shape and the structure of the plant, and also provide nutrients into the interior structures of the plant through diffusion. The outer cortex cells become thick through contact and outer movement, and are called collenchyma cells. Cortex cells are bounded on the outside by the epidermis, which is thin, and on the inside by the endodermis, which provides various chemical support for the plant including water management, starch storage, and protection from toxins.

Sources:

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes