Exoskeletons provided an evolutionary advantage to organisms by
A) increasing their ability to find a mate and reproduce.
B) increasing their mobility and protecting them from predation.
C) allowing exposure to oxygen.
D) increasing predation.
E) allowing increased opportunities for symbiotic relationships.
B
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Invasive Eurasian grass species can outcompete native North American grasses through
A. secretion of allelochemicals. B. producing more viable seeds. C. producing seeds year-round. D. avoiding grazing animals. E. faster seed germination.
What sort of symbiosis would a mycorrhiza represent? What will be an ideal response?
Although corals can capture prey, they also depend on __________ for nutrition
A. a symbiotic relationship with the photosynthetic zooxanthellae B. a symbiotic relationship with lichens C. the dead animals found on the ocean floor D. photosynthesis since they are part animal and plant E. a symbiotic relationship with a fish
What is a plus-strand virus?
What will be an ideal response?