What happens to the body parts, according to the principle of use and disuse?
a. Body parts grow in proportion to their biogeographic location.
b. Body parts grow in proportion to the needs of natural selection.
c. Body parts grow in proportion to how much they are used.
d. Body parts grow in proportion to how much they are not used.
Answer: c. Body parts grow in proportion to how much they are used.
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According to the diversity-stability hypothesis:
A. A loss of any species from an ecosystem leads to an approximately equal decline in stability. B. Losing even a few species from an ecosystem causes a drastic decline in ecosystem stability. C. The loss of a few species from an ecosystem does significantly affect ecosystem functioning. D. Every species has an important role in ecosystem function, but we cannot predict the effect of species loss. E. Genetic diversity is the most important part of ecosystem stability.
Photosynthesis uses sunlight to convert water and carbon dioxide into
a) oxygen. b) high-energy sugars and starches. c) ATP and oxygen. d) oxygen and high-energy sugars and starches.
The structure that people typically refer to as a "mushroom" is technically called the ____.
A. basidiocarp B. mycelium C. ascocarp D. hyphal mass E. zygospore
Which substance, by providing strength, allows sclerenchyma cells to provide support and play a role analogous to that of an animal's skeleton?
A) lignin B) sucrose C) starch D) chlorophyll