the presence or absence of vascular tissue is used to classify????
367268
The presence or absence of vascular tissues is used to clarify plants.\n\nIt is because of that vascular tissue that plants are capable of growing to different sizes and heights.\n\nFor example - mosses and lichens have little to no vascular tissue. This is why they are relatively small, and located only near damp places like swamps, bogs, or near the sea coast. Trees, by comparison, not only have cascular tissues, but they have 2 kinds of it! One type of xylem and phloem (the vascular tissues) become the parts that make up the bark, while another type of each, make up the wood of the tree. Basically any timber you buy from the lumber yard, is nothing but primary xylem and phloem.
617025
http://en.wikipedia.org/wiki/Blood_vessel
744707
Vascular Bundle\nA vascular bundle is a part of the transport system in vascular plants. The transport itself happens in vascular tissue, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues.\n\nMicturition\nMicturition, is the process of disposing urine from the urinary bladder through the urethra to the outside of the body.
762485
marijuana  kills  brain cells, it has been proved. now about vasculitis, whose  diagnosis  is established after a biopsy of involved tissue,  it is a pattern of blood vessel inflammation. Examples of tissues used for biopsy include skin, sinuses, lung, nerve, and kidney. Depending upon the situation, an alternative to biopsy can be an x-ray test of the blood vessels called an angiogram, which can demonstrate characteristic patterns of inflammation. No doubt that marijuana can contribute to the inflammation.
587020
No, an X-ray is supposed to tell the difference between tissue and bone due to their difference in density.
987920
categorization\n\nrecord
1107358
Seems to be a generic term for disease of the arteries.
770138
Without blood cells, your blood is a watery straw colored substance, and mostly consists of blood plasma and and a huge assortment of dissolved proteins, hormones, and sugars and fats.
678231
I think you are asking if it is possible to know how many damaged veins in the heart without exploratory surgery.  Yes, except it would be about the coronary (heart) arteries, not veins.  The arteries are the size of fairly large veins, in fact, leg veins are used when bypass surgery is done to the coronary arteries.  To find out how many and how badly the arteries are damaged by calcium and plaque (cholesterol) build-up, an Angiogram can be done, consisting of a tiny camera at the end of very thin fine tubing inserted into an artery at the groin, and slowly moved up and into the heart arteries.  An Angiogram would be done only in the event of heart disease symptoms, because the procedure itself carries some risk.
149916
Only vascular plants have transport tissues; some cells are differentiated into phloem and xylem.
205949
Vascular plants are a more recent evolutionary development than nonvascular plants. Nonvascular plants are bryophytes, the most primitive land-dwelling plantsm, and lack the adaptations to transport water and nutrients against gravity (lignin-impregnated conducting cells).\nVascular plants are, evolutionarily speaking, more recent, and contain xylem and phloem, the lignin-impregnated conducting cells which provide a rigid upright support structure and which transport water and nutrients throughout the plant. Xylem is the "woody" part of vascular plants, and transports sap up from the roots, while phloem transports nutrients throughout the plant.
141002
It would depend on the muscle.  There are three types of muscle in the human body: (1) Skeletal muscle, which moves the bones; (2) smooth muscle, which surround organs and do not work under our conscious control, and (3) cardiac muscle, found only in the heart.  Both types (1) and (3) do have a special, distinct appearance under the microscope which will definitely distinguish it from brain tissue - it will have a stiped, zebra-like appearance (which in type (1) are actually named "Z-lines") due to how these types of muscle are constructed.  In type (3), which is also called myocardium, the striped appearance is due to these little disks that connect one heart muscle fiber to another, like a chain.\n\nThis is something that distinguishes muscles from almost anything else I've seen under a microscope.  So, look for the stripes!  I hope this helps.
383916
Included...Vagina and ovaries\nExcluded...Penis and testicles\nNo explanation needed
211555
Arteries\n\nThere are two major kinds of blood vessels, veins and arteries. arteries run from the heart to all the other body parts, and the heart pumps fresh blood into the arteries. All the cells in the body draw nourishment and oxygen from this blood and leave out waste and carbon dioxide. The veins then carry this impure blood back to the heart. The blood that goes to the lungs brings back extra oxygen and the liver and the small intestine play a major role in introducing nourishment into the blood stream
654416
Most tissues in the human body contain differentiated cells that actually perform the function of the tissue and a population of undifferentiated cells that can take over some part of the function of that tissue should it be damaged. For this reason, many human tissues, such as liver, skin, and skeletal muscle tissue, are capable of repairing themselves if sufficient healthy tissue remains to replace the damaged parts.\n\nOther tissues seem to lack a population of undifferentiated cells (at least in adults) and generally do not regenerate. Tissues in this category include heart muscle, nerve tissue, and kidneys. So, among the cells that are least likely to be replaced by other cells in the human body are cardiac muscle cells, neurons, and the cells that make up the nephrons.
558504
id say the plants and animals are multi-celled and the others are single-celled. also cell specilization could be a difference.
260488
Absent a history of trauma, surgery or disease it would most\nlikely be classified as a normal variant.  Many people are\nasymmetric, i.e. not equal from left or right side.