1. Introduction to Biology

Which of the following lists contains the four most abundant elements found in living organisms?

Which of the following organisms is classified as a producer?

Which of the following animals lacks body symmetry?

Which of the following is a basic characteristic of all living cells?

Sea lions can be readily distinguished from seals because, in contrast to seals, they have:

Which of these is not a characteristic needed by living organisms?

Which type of ozone is considered beneficial because it absorbs harmful UV radiation?

Which of the following is a characteristic shared by all living things?

Which of the following best explains whether fish can 'drown'?

Which term describes an organism that produces its own food by converting inorganic substances into organic matter, thereby supplying both matter and energy to itself?

Which of the following groups of organisms are classified as heterotrophs?

Which of the following is a characteristic shared by all birds?

Which characteristic of life most distinguishes streams and rivers from other aquatic environments?

Which of the following best describes the number of cells found in organisms belonging to the kingdom Plantae?

Which of the following are noticeable secondary sex characteristics in humans?