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Science test 3
Study guide 1
Question | Answer |
---|---|
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 |