Growth from apical meristems, generally resulting in an increase in the length of a plant, is referred to as ____ growth
a. horizontal
b. typical
c. secondary
d. longitudinal
e. primary
ANSWER: e
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To move, an animal must expend ____ to overcome the effects of ____ and friction
a. oxygen; respiration b. muscle contractions; fatigue c. nutrients; motion d. glucose; movement e. energy; gravity
Which is an example of an event that would give rise to primary succession?
a. a dense landslide of mountain rocks covering an entire valley b. a fire that burns all surface vegetation c. an abandoned agricultural field d. a lake that dries up, killing all aquatic plants e. a forest that is logged
Fragile sites are chromosome locations that
A. show an increased number of chromosome bands. B. show a decreased number of chromosome bands. C. are all associated with a specific defective phenotype. D. indicate that carriers are mentally retarded. E. are inherited in a codominant fashion.
What is an advantage for using Arabidopsis to study plant development and genetics?
a. The Arabidopsis genome is largely unstudied, and therefore there is a lot that scientists can learn. b. Arabidopsis mutants can be easily induced with chemicals. c. There are no developmental mutants in Arabidopsis, therefore, normal development can be studied easily. d. This plant completes its life cycle in just a few months. e. This plant is a weed of no economic importance