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Science test 3

Study guide 1

QuestionAnswer
What is the first section of the small intestine? duodenum
What is the scientific name for the windpipe? trachea
What is the largest lymphatic organ? spleen
What type of symmetry does an organism that can be cut into equal halves in only one direction have? bilateral symmetry
What structure exchanges oxygen and nutrients between the blood an unborn child and his mother? placenta
Which dome-shaped muscle aids in breathing? diaphragm
In which organ is bile stored? gallbladder
What is the primary pigment that causes skin color? Melanin
Which one of the following types of white blood cells matures in the thymus? B cells
What structure controls simple reflexes? spinal cord
What portion of the body contains most of the vital organs? trunk
Which plant family helps restore nitrogen to the soil? pea family
What plant tissues carry food downward to the stems and roots? phloem
What is a scientific idea that has survived many experiments and observations without ever being proven false? law
What gland is considered the "master gland"? pituitary gland
What type of leaf has only one blade attached to the petiole? simple leaf
Which branch of biology studies the relationships between organisms in their environments? ecology
Created by: Bren2010
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