In this food web, the sunflower is __________
a. the primary producer
b. the primary consumer
c. the autotroph
d. both the primary producer and autotroph
D
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Four of the five answers listed below are related by a common source. Select the exception
a. glucocorticoids b. sex hormones c. cortisol d. adrenalin (epinephrine) e. mineralocorticoid
Bryophytes never formed forests (mats, yes, but not forests) because
A) they possess flagellated sperms. B) not all are heterosporous. C) they lack lignified vascular tissue. D) they have no adaptations to prevent desiccation. E) the sporophyte is too weak.
Regarding the experiments that "proved" spontaneous generation, which of the following statements is probably true?
a. Air was lacking. b. Too much heat was applied. c. The food source could not support life. d. Microorganisms were already present. e. Excess carbon dioxide was present.
Some species of tropical fireflies mimic the luminescent mating signals of females of a related species and will prey upon the males that have been attracted by the fake signal. How would you classify this behavior?
Is it Batesian mimicry, Müllerian mimicry, a third form of mimicry, or no mimicry at all? Briefly justify your answer. What will be an ideal response?