It separates the epithelium from the underlying tissue in animals.
Explanation
The basement membrane is a specialized, non-cellular layer of extracellular matrix found in animal tissues. It serves as a structural anchor and a selective barrier between different tissue layers.- It separates the epidermis from the cortex in plants. is Incorrect: In plants, the epidermis is separated from the cortex by cell walls and the middle lamella. Plants do not possess a basement membrane; their structural integrity is maintained by the cell wall.
- It separates the epithelium from the underlying tissue in animals. is Correct: The basement membrane separates the epithelium (which lines body surfaces and cavities) from the underlying connective tissue. It provides structural support, anchors the epithelial cells, and regulates the exchange of macromolecules between the epithelium and the connective tissue.
- It is the membrane surrounding the vacuole in plant cells. is Incorrect: The membrane surrounding the central vacuole in plant cells is specifically known as the tonoplast.
- It is the covering of the nerve axon. is Incorrect: The covering of a nerve axon consists of the axolemma (plasma membrane) and often a myelin sheath (an insulating layer), not a basement membrane.
Key Takeaway: The basement membrane is a critical extracellular structure in animals that anchors epithelial tissue to the underlying connective tissue.