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what are red blood cells, protozoans, phloem, muscle cells, Xylem, and leaf eperdemal cells

2006-11-09 15:14:22 · 6 answers · asked by Oh! Crud 3 in Science & Mathematics Biology

6 answers

Here is what i could fined but i was unable to find anything on the leaf eperdemal cells.

A red blood cell is - a cell in the blood of vertebrates that transports oxygen and carbon dioxide to and from the tissues

protozoans - Any of a large group of single-celled, usually microscopic, eukaryotic organisms, such as amoebas, ciliates, flagellates, and sporozoans.

Phloem - the part of a vascular bundle consisting of sieve tubes, companion cells, parenchyma, and fibers and forming the food-conducting tissue of a plant.

Muscle cells - an elongated contractile cell that forms the muscles of the body

Xylem -a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers.

2006-11-09 15:26:46 · answer #1 · answered by Baby Vamp 1 · 0 1

Red Blood Cells are blood cells containing hemoglobin, which transport O2; it is also called an erythrocyte.
Protozoan is a protist that lives primarily by ingeseting food, an animal-like mode of nutrition.
Phloem are vascular plant tissue consisting of living cells arranged into elongated tubes that transport sugar and other organic nutrients throughout the plant.
Xylem is vascular plant tissue consiting mainly of tubular dead cells that conduct most of the water and minerals upward from roots to the rest of the plant.
Tried to cover as much as i could..........hope that helps a little bit.

2006-11-09 23:35:35 · answer #2 · answered by Just Wondering.... 1 · 0 1

Red Blood Cells are also called Erythrocytes. Erythrocytes are cells found in the bone marrow. The same way that blood is produced, erythrocytes are also formed inside the bone marrow. It travels with the blood throughout the entire body to do its main function--delivering oxygen to the whole body and at the same time, inside the lungs/gills.

Protozoans are single-celled eukaryotes that commonly show characteristics usually associated with animals, most notably, mobility and heterotrophy. It's grouped with the kingdom Protista with the plant-like algae and fungus-like water molds and slime molds.

Phloem is a living tissue which is common to the vascular plants that's composed of still-living cells that transport sap or the fluid that circulates the whole plant in order to deliver oxygen and food

Muscle cell is a contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. Its function is to produce force and cause motion, either locomotion or movement within internal organs. Much of muscle contraction occurs without conscious thought and is necessary for survival, like the contraction of the heart or peristalsis, which pushes food through the digestive system.

Xylem is also a tissue of the vascular plant. Its main function is to deliver fluids with nutrients around the whole plant.

The epidermis is the outer single-layered group of cells covering a plant, especially the leaf and young tissues of a vascular plant including stems and roots. Epidermis and periderm are the dermal tissues in vascular plants. The epidermis forms the boundary between the plant and the external world. The epidermis serves several functions: protection against water loss, regulation of gas exchange, secretion of metabolic compounds, and (especially in roots) absorption of water and mineral nutrients. The epidermis of most leaves shows dorsoventral anatomy: the upper (adaxial) and lower (abaxial) surfaces have somewhat different construction and may serve different functions.

2006-11-10 08:17:18 · answer #3 · answered by GeLo'14 3 · 1 0

Red Blood Cells are red cells containing hemoglobin, the pigment which carries oxygen to and from lung in the form of oxyhemoglobin.

Protozoa are single - celled organism or unicellular microorganism like amoebas.

Phloem are a part of vascular tissue in plant which carries nutrients esp sugar (sucrose) from the leaves to every part of the plant where needed.

Muscle Cells are contractile tissue which contain myofibril. And there are 3 main muscle in the body ; smooth, cardiac and skeleton muscle.

Xylem are also a part of vascular tissue in plant which carries water and inorganic ions from roots to stems.

Leaf epidermal cells are epidermis that is made up of epidermal tissue which prevent the water loss from the surface of the leaves and also act as a barrier.

2006-11-10 03:24:39 · answer #4 · answered by Anonymous · 0 0

Red blood cells are also called as erythrocytes,,,,,, its main function is transportation of oxygen to all over the body,,,,, its absorbs oxygen through lungs and transforms to all over the body,,,,,,, it contains haemoglobin for absorption of oxygen,,,,, the colour of haemoglobin is red ,,,,,, hence the colour of blood is red

protozoans are singled celled animals
phloem is type of cells present in plants along with xylem cells

muscle cells are striated and non striated flexible and versatile tissues

2006-11-10 00:06:48 · answer #5 · answered by Anonymous · 1 0

Red blood cells are the most common type of blood cell and the vertebrate body's principal means of delivering oxygen from the lungs or gills to body tissues via the blood.

If you're doing a vocab sheet, figure out the rest for yourself :)

2006-11-09 23:15:58 · answer #6 · answered by moonfreak♦ 5 · 0 1

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