The epidermis___________. Is made of lignified cells that created a protective layer over the surface of a plant Expands throughout secondary growth Generates all trichomes Prevents gas and water exchange with the environment
Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
The epidermis___________.
Is made of lignified cells that created a protective layer over the surface of a plant
Expands throughout secondary growth
Generates all trichomes
Prevents gas and water exchange with the environment
In plants Epidermis is the outermost layer that covers stem, roots, leaf , flower and other parts. It is a waxy cuticle that provide a protective barrier against mechanical injury, water loss, and infection. The cuticle gives surface of parts white and blue color. Epidermis consists of three main cell types that are- pavement cells, guard cells, and their subsidiary cells which surround the stomata and trichomes( leaf hairs). The epidermis of petals also forms a variation of trichomes which are called conical cells.
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