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 BIOLOGY PRACTICAL QUESTIONS – KAKAMEGA NORTH DISTRICT

 

 Each candidate to be provided with:

  • Scalpel blade
  • A ripe tomato labelled specimen Q.
  • A mortar and a pestle
  • Filter paper,
  • Means of heating
  • DCPIP
  • 3 droppers
  • 50cm3 beaker
  • 4 A freshly killed soldier termite labelled specimen R
  • 4 A freshly killed maize weevil labelled specimen. S
  • 4 A hand lens.

 

1.  You are provided with specimen labelled Q. Examine it and;

 (a) (i) Name the part of a plant specimen Q is

(ii) Give a reason for your answer in (a)(i) above

 (b) (i) Name the likely mode of dispersal of specimen Q

(ii) Give two reasons for your answer in (b)(i) above

(c) Make a transverse section through specimen Q to obtain two equal halves

(i) Draw and label one of the halves of specimen Q.

  (ii) Crush one f the halves of specimen Q in a mortar using a pestle to obtain a paste. Gently

  decant the juice into a boiling tube.

 d) Using the reagents provided test for the food substances present in the juice extracted.

  Record your procedures, observations and conclusions in the table below.

ecolebooks.com

Food substance

Procedure

Observations

Conclusion

 

 

  

 

 

  

 

2.  You are provided with specimens labelled R and S. Examine then;

 (a) (i) Name the phylum to which the specimen R and S belong  

(ii) Give three reasons for your answer in (a)(i) above.

 (b) (i) Name the class to which specimens R and S belong

(ii) Give three reasons for your answer in (b)(i) above.

 (c) State two observable differences between specimens R and S.

Image From EcoleBooks.com3.  The drawings below illustrate two skulls V and W obtained from two different mammals.

Examine them.

 

Image From EcoleBooks.com

Image From EcoleBooks.comImage From EcoleBooks.com

 

Image From EcoleBooks.com

 

 

 

Image From EcoleBooks.comImage From EcoleBooks.com

 

 

 

 (a) State the mode of feeding of the organism from which each of the skulls was obtained.

Give two reasons in each case.

 (b) Label canine on drawing W and carnassial teeth on drawing V  

(c) State the function of each of the following labelled parts on the drawing R & S  

(d) Write down the dental formula of the organism from which skull W was obtained  

 (e) State four observable differences between the skulls V and W.  

 (f) (i) Name the part labelled T

(ii) Name the vertebra that articulates with the part labelled T.  

 

 

 

KAKAMEGA NORTH DISTRICT BIOLOGY PRACTICAL MARKING SCHEME (ANSWERS)

 

 

 




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EcoleBooks | BIOLOGY PRACTICAL QUESTIONS AND ANSWERS - KAKAMEGA NORTH DISTRICT

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