Which of the following nitrogenous waste/s precipitate/s out of solution?
a) urea
b) ammonia
c) uric acid
d) none of these
Explanation: urea and ammonia are most toxic than uric acid
Why the vertebrates that lay shelled eggs excrete uric acid?
a) egg shells are permeable to gases but not to liquid
b) if embryo releases urea or ammonia, it will accumulate inside to toxic level
c) uric acid precipitates out of solution
d) all of these
Human Excretory System:
What
is the colour of human kidney?
a) dark brown
b) dark red
c) light brown
d) light pink
What is the length of a human’s kidney?
a) 12 cm
b) 6 cm
c) 4 cm
d) 18 cm
What is the width of a human’s kidney?
a) 12 cm
b) 6 cm
c) 4 cm
d) 18 cm
