Which of the terms describes an animal whose behavior is tied to a circadian rhythm?
a. carnivore
b. crepuscular
c. parasitic
d. reptilian
e. symbiotic
B
You might also like to view...
Evolution has been tested in various ways
Genetic, fossil, anatomical, physiological and behavioral studies all confirm that evolution is the mechanism of the origin of species. Thus, in science evolution is considered a scientific
a. fact b. hypothesis c. law d. theory e. guess
Where in a sperm cell are mitochondria found?
a. the head b. the midpiece c. the tail d. both the tail and the midpiece e. both the head and the midpiece
Pea plants cannot self-fertilize because an individual plant is either female or male, having either ovaries or stamens but not both.
Answer the following statement true (T) or false (F)
Why is sexual reproduction most likely the ancestral state in eukaryotes?
a. Asexual reproduction is completely absent from basal unicellular eukary-otes. b. Under the parsimony principle, the most common form of a trait's state is always the ancestral state. c. The "twiggy" distribution of obligate asexual reproduction in phylogenetic trees makes it more likely that asexuality is a derived trait. d. Evolutionary models suggest that obligate asexual taxa are more prone to extinction than sexual ones.