Multilevel selection/cooperation has been documented in ________
A) bacteria
B) plants
C) humans
D) All of the above.
D
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Four of the following are extraembryonic membranes of the amniote egg. Which one is the exception?
a. albumen b. amnion c. chorion d. allantois e. yolk sac
Which of the following represents a potential threat to biodiversity?
(a). People construct artificial reefs to support marine life. (b). Humans clear land for agriculture and housing. (c). Energy flows through an ecosystem, with much lost as heat. (d). Tropical rain forests and coral reefs are found where solar energy is the most abundant. (e). In a food chain, one population feeds on another.
A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than individuals with other characteristics is called __________.
A. .evolutionary adaptation B. descent with modification C. natural selection D. evolution
Which of the following statements about root cap is FALSE?
a. It protects the delicate root apical meristem b. It secretes lubricating polysaccharides c. It orients the root that it grows downward d. It loses cells during root growth. e. It absorbs nutrients.