Applied Bio 27.4

Multiple Choice

Insects, reptiles, and birds rid their bodies of ammonia by

• allowing it to diffuse out of their bodies

• converting it into uric acid

• converting it into urea

• exreting it as urine

Multiple Choice

Freshwater fish

• excrete excess water through their kidneys

• lose water through osmosis

• conserve water by producing concentrated urine

• pump excess salt out across their gills

Multiple Choice

Some terrestrial invertebrates produce urine in the

• kidneys

• gills

• nephridia or Malpighian tubules

• nephrostomes

Multiple Choice

What adaptation have some marine reptiles and birds evolved to eliminate excess salt?

• they have specialized kidneys that can store the salt safely

• they excrete urine that is 25% more concentrated than their blood

• they have specialized glands in their heads that excrete solutions

• they pump out the excess salt across specialized gills

Multiple Choice

How do kidneys remove excess water from the blood?

• the kidneys use active transport to remove water from the blood

• kidneys use passive diffusion to remove water from the blood

• kidneys use passive osmosis to remove water from the blood

• kidneys use their nephridia to filter water out of the blood