Which bird trait is an adaptation that is probably less well developed in flightless birds such as penguins and ostriches?
A) honeycombed bone structure
B) amniotic egg
C) vertebrae
D) presence of feathers
Answer: A
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You would expect water derived from the synthesis of ATP to be especially important for
A. small desert dwelling animals. B. rain forest amphibians. C. arctic mammals. D. sea birds. E. marine mammals.
An accurate contrast between radial and bilateral symmetry among animals is that
A. mirrored arrangement of body components is common with radial symmetry, but not found at all in bilateral symmetry. B. body components are arranged around a central axis in radial symmetry, but are arranged with a distinct left and right in bilateral symmetry. C. radial symmetry only occurs in round organisms like the sponges, while bilateral symmetry is common to all of the more complex animals. D. animals with radial symmetry demonstrate cephalization, while those with bilateral symmetry do not. E. radial symmetry is characterized by the animal having a coelom, while bilateral symmetry has no coelom in the animal body.
The relationship between mean annual precipitation (MAP) and aboveground net primary productivity (ANPP) is ANPP = 0.50 × (MAP) + (70 ) in mm MAP and (g/m2/yr) for ANPP in grassland systems
If precipitation is currently 1000 mm and MAP increases by 25 percent, then ANPP will be approximately A) 570. B) 625. C) 695. D) 713.
Why might life be much older than LUCA?
What will be an ideal response?