131x Filetype PDF File size 1.43 MB Source: www.chisd.net
Test 2: Ecology Version B INSTRUCTIONS: DO NOT WRITE ON EXAM Some questions (c) 2015 by Region 10 Educational Service Center. Some questions (c) 2015 by TEKS Resource System. Page 2 GO ON 1 The diagram below represents the nitrogen cycle in a student’s aquarium. Ammonia, nitrites, and, to a lesser degree, nitrates can be harmful to fish. The student wants to keep the nitrogen in this aquarium cycling normally without having to continually change the water. Which of the following should the student add more of to help remove nitrates and improve the natural cycling of nitrogen in this aquarium? A Fish B Plants C Nitrobacter D Water 2 A hypothesis must always be - 3 How should students properly dispose of any leftover iodine solution from the F proven right or proven primary investigation? wrong A Pour it down the drain G obeyed as a law B Drop it in the trash can H justified in the data C Follow the teacher’s instructions J observed for data D Pour it back into the container Page 3 GO ON 4 If new information brought about by 7 Which of the following is true for a new technology disproves a theory, scientific theory? what will happen to the theory? A capable of making valid predictions F Nothing, theories are always right. B generalization supported by G The theory will no longer exist. experimentation H The theory will be modified to fit C can obtain repeatable results the new information. D aAll the above J The theory will become a hypothesis. 5 Which material should be disposed of after a lab, rather than being reused or recycled? A Test tube that had held salt water B Cotton swab used to collect cheek cells C Scalpel used to dissect plant specimens D Large opened bottle of rubbing alcohol 6 Which of the following represents a factor that limits a population and is dependent on the population density? I. disease II. resource availability III. competition IV. weather patterns F I & III G II & IV H I, II, & III J I, II, III, & IV Page 4 GO ON
no reviews yet
Please Login to review.