It is known that many trees lose their leaves in response to decreasing day length. As a result, you think that Ginkgo trees may also lose their leaves in response to decreasing day length. This statement is an example of:

A. an experiment
B. a hypothesis
C. a theory
D. deductive reasoning


Answer: B

Biology & Microbiology

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The behavior of parental care exhibited by dinosaurs is thought to be __________ to this behavior in crocodiles and birds because phylogeny shows that these three groups share a common ancestor. 

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The study of the diagnosis of disease by measuring antibody levels in serum is called:

a. immunology. b. immunohematology. c. serology. d. immunocytology.

Biology & Microbiology

Circulation in the accompanying diagram functions primarily as a(n) ____

a. an open circulatory system b. system consisting of mostly of tissue spaces c. closed circulatory system d. interstitial fluid system e. three-directional system

Biology & Microbiology

Saltatory conduction is

A) the process of conduction leaping along myelinated neurons. B) an action potential generated in taste receptors or buds. C) the movement of neurotransmitters across a synaptic cleft. D) the activation of the fight-or-flight response. E) the movement of an electrical impulse from the dendrite to an axon.

Biology & Microbiology