What would result if more than one sperm fertilized an egg?
A. hermaphroditism
B. parthenogenesis
C. polyploidy
D. twins
E. haploidy
C. polyploidy
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Weeks of depressing work in the botany lab have culminated in yet another unsuccessful attempt to germinate your seeds. You are down to three batches of carefully packed seeds (you started with ten), and not one seedling to show for your work. Head in hands, you consult with a colleague from the California lab who sent the seeds earlier in the year. He makes a crazy recommendation but you brush it off because this colleague always has wild ideas. Later, in desperation, you decide to do it. Following his instructions carefully, you set fire to the seed packet and then put out the controlled blaze you have created. Six weeks later, you are carefully tending the seedlings and berating yourself for not having listened to him sooner. Of course! Which biome are these seeds from after all?
a. arctic tundra b. boreal forest c. chaparral d. temperate forest
Your alarm clock goes off once again, and it is 7 a.m. Which of the following events leads you to hit
the snooze button?
a. The number of alpha waves emitted by the brain increases. b. The number of theta waves emitted by the brain increases. c. The reticular formation sends stimuli to the cerebral cortex. d. The cortex of the cerebellum is stimulated. e. The limbic system is stimulated.
The "age of amphibians" was the _____ period.
A. Carboniferous B. Silurian C. Permian D. Devonian E. Ordovician
If you observe an animal ingesting large amounts of food at short intervals and material entering and leaving from the same place, also frequently, you could say it is probably an
A. endotherm with an incomplete digestive tract. B. ectotherm with an incomplete digestive tract. C. endotherm with a complete digestive tract. D. ectotherm with a complete digestive tract. E. None of the answer choices is correct.