Which group comprises a significant portion of phytoplankton and therefore is important to marine food webs?
A) Protozoa
B) Slime molds
C) Cyanobacteria
D) Diatoms
E) Euglenids
D
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A population's carrying capacity _____
A) may change as environmental conditions change B) can be accurately calculated using the logistic growth model C) generally remains constant over time D) increases as the per capita growth rate (r) decreases E) can never be exceeded
How long does it take for the primary immune response to kick in after the first exposure to an antigen?
a. 2 weeks b. 3 - 4 days c. 2 months d. 6 weeks e. 12 hours
Pea plants cannot self-fertilize because an individual plant is either female or male, having either ovaries or stamens but not both.
Answer the following statement true (T) or false (F)
Match each root adaptive type with the plant in which it is found.
A. Pneumatophores B. Buttress roots C. Prop roots