Survival on land for organisms is difficult because of the problem of
A. desiccation.
B. pollination.
C. syngamy.
D. spore germination.
E. coevolution.
A. desiccation.
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Do mycorrhizal symbioses occur between fungus and non-photosynthetic plants?
A. Yes; non-photosynthetic plants also need minerals. B. No; non-photosynthetic plants cannot provide organic compounds to fungi. C. No; non-photosynthetic plants do not need phosphate. D. Yes; non-photosynthetic plants can generate organic compounds without photosynthesis.
If immersion oil was replaced with water, what would happen?
A. The refractive index of water would be greater than air but less than oil, improving resolution less than oil. B. The refractive index of water would be less than that of air, decreasing resolution. C. The refractive index would increase, improving resolution. D. There would be no difference.
Select all of the examples of cytokines, the signaling molecules produced by T lymphocytes, macrophages, and other cells.
The cells that make up muscle tissue are called _________
a. macrophages b. simple squamous epithelium c. red blood cells d. myocytes