Q8 of 48 Page 104

Name the main nitrogenous metabolic waste excreted out by mammals including humans.

The main metabolic waste that is excreted out by mammals, including humans in uric acid.


Uric acid is less toxic than urea or ammonia.


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7

Differentiate between the following pairs of terms:

Urea and urine.

 7

Differentiate between the following pairs of terms:

Excretion and katabolism.

 9

Match the items in Column I with those in Column II and write down the matching pairs.























Column I



Column II



(a) Bowman’s capsule



(i) Renal artery



(b) Contains more CO2 and less urea



(ii) Regulates amount of water excreted



(c) Antidiuretic hormone



(iii) Renal vein



(d) Contains more urea



(iv) Glomerculus


 10

Fill in the blanks in the following passage to make it a meaningful description.

In a nephron, the ____ flows through the ____ under great pressure. The reason for this great pressure is that the ____ (outgoing) ____ is narrower than the ____ (incoming). This high pressure causes the ____ part of the blood to filter out from the ____ into the ____ capsule.