These plants contain a the chemical lignin. Lignin is a chemical found in the cell walls of some plant cells, mostly those in vascular tissues, lignin hardens these cells' cell walls, allowing them to support the plant against the pull of gravity.
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This crab is an arthropod. It has a segmented body and jointed appendages, as well as a hard exoskeleton. in this case the front two appendages are adapted for defense,Arthropods are the most diverse phylum of the animal kingdom and possibly the most successful with an estimated 10 to the 18th individual arthropods on planet Earth.
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1 comment:
Great scallop shell picture. Charlie does not look too unhappy...
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