A symbiotic relationship in which both species benefit is...
a) commensalism
b) mutualism
c) parasitism
d) predation
Ans: b) mutualism
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Two dihybrid pea plants (both tall and with purple flowers) are mated. The cross resulted in 9866 progeny, of which 5550 were tall with purple flowers. What are the expected ratios of the other phenotypic classes?
A. 1850 Short/white flower 616 Tall/white flower 1850 Short/purple flower B. 1850 Short/white flower 1850 Tall/white flower 1850 Short/purple flower C. 616 Short/white flower 1850 Tall/white flower 1850 Short/purple flower D. 5550 Short/white flower 5550 Tall/white flower 5550 Short/purple flower
Diseases that primarily exist in animals, but may be transmitted to humans are called
A. parasitic. B. symbiotic. C. zoonotic. D. epidemic.
Answer the following statements true (T) or false (F)
1.Mycologists classify fungi into five phyla based on their sexual structures. 2.Ascomycetes are fungi that cause disease and are not beneficial to humans in any way. 3.A dikaryotic stage is common in the life cycle of many plants, protozoans, and fungi. 4.Salt and sugar in high enough concentrations retard mold growth by limiting the ability of these organisms to take up water by osmosis. 5.Some animals are autotrophs.
Saltwater has a higher concentration of solutes than freshwater
Indicate whether the statement is true or false