Monday, March 11, 2019

Excretory products and their elimination: Previous Year Questions Part 2

EXCRETORY PRODUCTS AND THEIR ELIMINATION

MARCH 2013
1.     In a biology class related to excretion in the human body, a student gave an opinion that in every minute about 2% of the total blood volume of the body is converted to GFR whereas only 1% of this GFR is eliminated as urine. Evaluate this opinion and substantiate your answer. (2)
OCTOBER 2013 (IMPROVEMENT)
1.     Observe the schematic diagram showing the mechanism for regulating blood volume.
a.     Fill the gap in the diagram. (½)
b.     Illustrate how blood volume is regulated by this system. (1½)
MARCH 2014
1.     The output of urine increases in clod days while decreases in hot and sunny days. Can you give a reason for this phenomenon as realized from the graph given below? (2)
AUGUST 2014 (IMPROVEMENT)
1.     A diagrammatic representation of a nephron is given.
a.   Identify the parts labeled as X and Y.
b.   Which part/parts of a nephron constitute the Malpighian body? (1+1=2)
MARCH 2015
1.     Observe the figure given below and answer the questions.
G:\blue tooth\New Doc 13_3.jpg
a.   Write the name of the figure.
b.   Name the labelled part (A) and (B).  (2)
SEPTEMBER 2015 (IMPROVEMENT)   
1.     Terrestrial animals are either ureotelic or uricotelic not ammonotelic. Evaluate the statement. (2)

PART 3

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