mesophyll
Tissue between the upper and lower epidermis of a leaf blade (lamina), consisting of parenchyma-like cells containing numerous chloroplasts.
In many plants, mesophyll is divided into two distinct layers.
The palisade mesophyll is usually just below the upper epidermis and is composed of regular layers of elongated cells. Lying below them is the spongy mesophyll, composed of loosely arranged cells of irregular shape. This layer contains fewer chloroplasts and has many intercellular spaces for the diffusion of gases (required for respiration and photosynthesis), linked to the outside by means of stomata.
In many plants, mesophyll is divided into two distinct layers.
The palisade mesophyll is usually just below the upper epidermis and is composed of regular layers of elongated cells. Lying below them is the spongy mesophyll, composed of loosely arranged cells of irregular shape. This layer contains fewer chloroplasts and has many intercellular spaces for the diffusion of gases (required for respiration and photosynthesis), linked to the outside by means of stomata.
© RM 2010. Helicon Publishing is division of RM.
Encyclopaedia search
Advertisement starts
Advertisement ends
Advertisement starts
Advertisement ends
Country search
Dictionary search
Vanuatu flag
Health search
Advertisement starts
Advertisement ends
Channel site map
You may also like...
Skip to page content | Text onlyGraphical version of this page
TalkTalk Quicklinks. Please visit our Accessibility Page for a list of the Access Keys you can use to find your way around the site, skip directly to the main navigation, to the page content, or to more links within homepage.
- Wednesday , February 10, 2010
- Make TalkTalk my homepage
Page Footer
Access keys
You will need to use different key combinations in order to use access keys depending on your internet browser, find out which on our accessibility page.
- (0) Navigate to Accessibility page.
- (1) Navigate to Home page.
- (2) Navigate to My email.
- (3) Navigate to My Account.
- (4) Navigate to Site Map page.
- (5) Navigate to Contact us page.
- (6) Navigate to Members channel.
- (7) Navigate to Services channel.
- (8) Navigate to News & Info channel.
- (9) Navigate to Entertainment channel.
- ([) Skip down to the Primary navigation block.
- (]) Skip down to the more links within this section block.
- (=) Bypass all navigation and jump to the content.
- (x) Text only version of this page.