Which growth response causes the shoots of a plant grown in the dark to grow upward?
A) phototropism
B) thigmotropism
C) gravitropism
Answer: C
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All ciliates have cilia at some point during their life cycle, and some use the cilia not just for movement but also to direct food as well
Indicate whether the statement is true or false.
Mesophelic crenarchaeotes (Thaumarchaeota) have been isolated ________.
A. from marine plankton B. as symbiotes of sea sponges and sea cucumbers C. as pathogens of whales and giant squid D. from rice paddies and lake sediment
Increased carbon dioxide concentrations may contribute to
a. ozone depletion. b. global warming. c. eutrophication. d. groundwater contamination. e. biomagnification.
Which stage of human development immediately precedes the neonate stage?
a. fetus b. embryo c. infant d. morula e. newborn