Birds are different from reptiles in all of the following features except
A. bipedalism.
B. the presence of feathers.
C. endothermy.
D. the presence of a flight skeleton.
E. their lack of teeth.
Answer: A
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Plants that have leaves arranged in a rosette
A) Have a circular arrangement of leaves and long internodes B) Are low growing because they have no stems whatsoever C) have greatly shortened internodes D) always have compound leaves
An invertebrate statocyst contains ____, which surround movable ____. Changes in body position
move the latter and thus trigger action potentials.
a. statoliths; sensory hair cells b. sensory hair cells; statoliths c. otoliths; sensory hair cells d. efferent neurons; otoliths e. efferent neurons; statoliths
What are protobionts?
a. a group of abiotically produced organic molecules surrounded by a membranelike structure b. a group of biotically produced inorganic molecules surrounded by a membranelike structure c. a group of biotically produced organic molecules surrounded by a membranelike structure d. a group of abiotically produced inorganic molecules surrounded by a membranelike structure
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
A) Telophase B) Anaphase C) Prophase D) Metaphase