The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?

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#Question id: 3460

#11. Evolution and Behavior

The many eyes hypothesis suggests prey flock because:

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#Question id: 11091

#7. System Physiology – Animal

A diver is breathing 10% O2 at a pressure of 2000 mm Hg. The diver’s body temperature is 37°C, and PCO2 = 32 mm Hg. What is the alveolar PO2?

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#Question id: 10504

#6. System Physiology – Plant

Under which conditions, the Pseudomonas aeruginosa synthesize and release of siderophores

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#Question id: 8902

#9. Diversity of Life Forms

What do craniates have that earlier chordates did not have?

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#Question id: 7763

#5. Developmental Biology

Two major sources of mutation are radiation and reactive oxygen species (ROS).The reactive oxygen species hypothesis for aging postulates that 

1) Senescence results from the accumulation of DNA, lipid, and protein damage inflicted by ROS of mitochondrial origin; and

2) Mitochondria of long-lived species should produce high ROS than do mitochondria of short-lived species.

3) the capacity of mitochondria to consume ROS might distinguish long-lived species from short-lived species, rather than differences in ROS generation.