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Transcript of Cell Diversity
A leaf contains three types of tissue: dermal, vascular and ground tissue
The heart is made up of cardiac muscle, surrounded by pericardium and controlled by nervous tissue
Combine with a specific antigen produced by white blood cells
they may be used to attach to and show the presence of antigens on the surface of cancer cells
If toxic drugs are attached to the monoclonal antibodies the drug can be delivered to the cancer cells
Tissue culture - is the growth of cells in or on a medium outside an organism
In vitro means outside the body
In vivo means inside the body
Conditions necessary for tissue culture are:
the absence of micro-organisms
food, vitamins and minerals
hormones to stimulate growth
is made up of nerve cells called neurons
the function of neurons is to carry electrical impulses to and from the brain
There are four main types of animal tissue: epithelial, connective, muscular and nervous tissue
consists of a number of cells spread out in a matrix
it joins and supports body structures
examples are adipose tissue, blood, cartilage and bone
Xylem - consists of hollow tubes that run from the root to the leaves. The function of xylem is to transport water and minerals up the plant
Phloem - consists of many tube like structures and is found in the leaves, stems and roots. The function of phloem is to transport food from the leaves to other parts of the plant
There are four types of plant cells: dermal, vascular, ground and meristematic tissue.
is a single layer of cells surrounding the surface of the plant
they are rectangular cells with a thick outer layer called the cuticle
the function of dermal tissue is to protect the plant and prevent water loss
A Tissue - is a group of similar cells that are modified to carry out the same function
Micropropagation - is the growth of large numbers of plants from plant tissue, producing genetically identical plants
Benefits of micropropagation -
a large number of plants are produced
plants produced are genetically identical
inexpensive way to mass produce plants
Applications of tissue culture
What is a tissue?
Name two types of plant tissue and give their function.
Name two types of animal tissue and give their function.
What is tissue culture?
Name one application of tissue culture.
Give one advantage of the tissue culture you have named.
What is an organ?
Name one plant organ and one animal organ.