Some species of Lycopodium produce gametophytes that grow beneath the surface of the soil, while others grow on the soil surface. Basing your answer on what you’ve learned from other plants in this exercise, predict how each respective type of Lycopodium gametophyte might obtain its nutritional needs.
What will be an ideal response?
Subterranean gametophytes rely on a symbiotic association with a fungus while above-ground gametophytes are green and photosynthetic.
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Because of the natural evolution of microorganisms, it is necessary to use techniques that allow distinguishing them at the level of
A. species. B. genera. C. family. D. strain.
When a child is born, mitosis ceases to function.
Answer the following statement true (T) or false (F)
The first living cells emerged approximately how many years ago?
a. 100 million b. 500 million c. 1 billion d. 2 billion e. 4 billion
There is a strong correlation between stress and susceptibility to colds. What does this mean?
A) Stress must directly cause susceptibility to colds. B) A high susceptibility to colds must directly cause stress. C) People with high stress must come into contact with more cold viruses. D) Stress might or might not affect susceptibility to colds.