Uasin Gishu District Bio Ppr 3 Question Paper

Uasin Gishu District Bio Ppr 3

Course:Secondary Level

Exam Year:2006

BIOLOGY(PRACTICAL)
231/ 3

1. You are provided with specimen D1
Examine it carefully.
With reasons, classify the specimen into the following taxa:-
(i) Phylum 1mk * UG*
Reason s 2mks* UG*
(ii) Class 1mk* UG*
Reason s 2mks* UG*
b) From your observations. State the two features that enable the specimen to pass
through crevices. 2mks* UG*
c) Remove a whole hind leg from the specimen. Draw and label the parts. 4mks* UG*
Work out the magnification of your drawing. 1 mk* UG*
2. a) You are provided with solution labelled A. Use the reagents provided to carry-out
food tests to find the nutrients present.
i) Record your observations, procedures and conclusion in the table below. 6mks* UG*
Food substance Procedure Observation Conclusion
(ii) State the one function of the food present in human body. 1mk* UG*
b) You are provided with a specimen labeled B which is part of a plant.
i) Using a scapel, make thin sections of the petiole of the specimen. Place the sections in a
petri-dish containing methylene blue. Allow to stand for about one minute, select the
thinnest section and mount on a glass slide. Observe the section using a hand lens
i) Make a labelled plan diagram of the section. 4mks* UG*
ii) What was the purpose of using methylene blue. 1mk* UG*
iii) State two functions of the specimen in plants. 2mks* UG*
3. You are provided with specimen L1 and L2. Examine them. Identify the specimens giving a reason for your identity 4mks* UG*
b) Using observable features only, describe how specimen L1 is adapted to its function. 4mks* UG*
c) Name the type of joint that is found between the two specimen. 1mk* UG*
d) Name one other bone that articulate with specimen L1 and state the function of the bone.
Bone 1mk* UG*
Function 1mk* UG*
e) How is specimen L2 adapted to its function. 2mks* UG*

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