Histology Flashcards
Study of tissues and cells under a microscope
Histology
Tissues that can be differentiated
Meristematic tissues
Produces cells that quickly differentiate, or specialize, and become permanent tissues
meristems
Meristematic tissues differentiate into ___ main types
three
Tissues that cannot be further differentiated further
permanent tissues
Tissues that have lost their ability to divide
Permanent tissues
Covers the plant and can be found on the outer layers of roots, stems, and leaves
Dermal tissues
Main functions of dermal tissues
Transpiration, Gas exchange, and defense.
The plumbing system of the plant
vascular tissues
main function of the vascular tissues
Allows water, minerals, and dissolved sugars from photosynthesis to pass through the parts of the plant.
Vascular tissues are composed of two primary conducting tissues
Xylem and Phloem
Tissues that are not considered dermal or vascular tissue
Ground tissues
main functions of ground tissues
Store molecules (such as starch)
Photosynthesize (Such as mesophyll cells)
Support
Scientific name of alfalfa
Medicago sativa
Family of Alfalfa
Febaceae
Composes the horizontal rays in wood
Parenchymal cells
Retains the ability to divide
Parenchymal cells
Important in vegetative regeneration and wound healing
Parenchymal cells
Function of parenchymal cells
photosynthesis, storage, and transport
An integral part to vascular tissues where it provides a route of exchange for materials within and between xylem and phloem
Parenchymal cells
Scientific name of Celery leaf petiole
Apium graveolens
Celery leaf family
Apiaceae
Elongated living cells of uneven primary thick walls
Collenchymal cells
What does collenchymal cells possess
Hemicellulose, cellulose, and pectic materials
Function of collenchymal cells
provides support, structure, mechanical strength and flexibility to the petiole, leaf veins, and stem of young plants allowing for easy bending without breakage
Specialized type of parenchymal cells responsible for storing chlorophyll
Collenchymal cells
Does not usually participate in photosynthesis
Collenchymal cells
Does not usually participate in photosynthesis
Collenchymal cells
living cells with a thick primary wall
Collenchymal cells
Pear fruit
Pyrus communis L.