__________ is a fruit species that can be propagated by apomixis
a. Apple
b. Peach
c. Citrus
d. Pear
e. Peach
C
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What role does Acidithiobacillus ferrooxidans play in the copper leaching process?
A) oxidation of sulfide to sulfate B) reduction of oxidized iron (Fe3+) to reduced iron (Fe2+) C) oxidation of reduced iron (Fe2+) to oxidized iron (Fe3+) D) reduction of sulfate to sulfide
In this diagram of the life cycle of a moss, which structure, A, B, C, or D, is the spore-producing sporangium?
1.A
2.B
3.C
4.D
Which of the following is incorrect about blood cells?
A. They include glial cells. B. They include leukocytes that are either granulocytes or agranulocytes. C. They develop from undifferentiated stem cells. D. After birth, they are produced in red bone marrow sites. E. They include erythrocytes that, when mature, lose their nuclei.
Based on the fact that CO2 limits photosynthesis in some current environments, what might you conclude about the evolution of photosynthesis?
A. Photosynthesis evolved when environmental concentrations of CO2 were high. B. CO2 levels likely did not have a bearing on the evolution of photosynthesis. C. Photosynthesis evolved in a greenhouse. D. Photosynthesis evolved when environmental concentrations of CO2 were low.