narrow external opening to the gill chamber.
small fluid-filled sacs that store, transport, or digest cellular products and waste.
an allergic reaction that triggers the immune system causing constriction and inflammation of...
a leaf with certain areas that lack chlorophyll. The leaf therefore contains both green and non-...
undifferentiated mass of tissues that forms when small pieces of the parent plant, called...
small pieces of the parent plant grown in plant-tissue culture.
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