Which of the following is a disadvantage of sexual reproduction?
a. It produces genetically diverse offspring.
b. Large numbers of offspring can be produced quickly.
c. Only half the population can produce offspring.
d. Organisms have both male and female reproductive systems.
c. Only half the population can produce offspring.
One disadvantage of sexual reproduction is that only half the population can produce offspring.
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Reabsorption of water in the hindgut of insects is controlled by which of the following?
A) osmotic gradients created by ion pumps B) selective absorptive processes that take place in the Malpighian tubules C) ion concentration of hemolymph D) osmoregulators in the rectal gland
Which of the following is incorrect concerning a
nerve net? It a. is found in animals with radial symmetry. b. is responsive to information arriving from any direction. c. shows evolution of cephalization. d. controls cells with contractile properties. e. receives information from sensory cells.
The shift in membrane fluidity from a gel-like state to a more liquid state as temperature rises is known as a ________
Fill in the blank with correct word.
Which of the following is a good example of two phenomena that are correlated but show no causal relationship?
A) Whenever the price of oil goes up, the price of airplane tickets goes up. B) Whenever I do poorly on a biology exam, I eat a quart of ice cream. C) I did poorly on my last biology exam, so I ate a quart of ice cream. D) Between 1937 and 1979, every year that a Democrat was elected President of the USA, a National League team won the World Series, whereas every year a Republican was elected President of the USA, an American League team won the World Series. E) When I walk to the bus, the trees I pass are a maple, an oak, an elm, a hickory, and another maple, in that order