PAPER 2

PRACTICAL

1. Specimen J, K and L are livestock parasites.

a) Identify the specimens.

J....................................................................................

K......................................................................................

L........................................................................................

b) State two effects of each specimen on its host.

i) J..................................................................

ii) K.....................................................................

iii) L........................................................................

c) Give one control measure for each specimen.

i) J..........................................................................

ii) K...........................................................................

iii) L...........................................................................

d) (i) Name the intermediate host of specimen L.

(ii) Give two methods of controlling the intermediate host in (d) (i).

2. Specimen N1 and N2 are plants.

a) Observe the specimens and record three structural differences between them.

N1 N2

i)......................

ii)......................

iii)....................

......................

.......................

.....................

b) From your observations, state the family of plants to which each specimen belongs.

N1.........................................................................................................................

N2........................................................................................................................

c) From the structure of the specimens, suggest two ways in which each specimen contribute to soil productivity.

N1...........................................................................................................................

N2..........................................................................................................................

d) (i) Which of the two specimens is suitable as a green manure plant?

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

3. You are provided with specimens and name the nutrients supplied by each specimen.

a) Identify the specimens and name the nutrients supplied by each specimen.

Specimen Identity Nutrient supplied
P
Q
R

b) Describe how each specimen is applied in the field

(i) P....................................................................................

(ii) Q.....................................................................................

(iii) R......................................................................................

c) Give one reason why it is advisable to apply specimen Q on a coffee crop at the beginning of each rainy season.

d) State three ways of ensuring efficient use of specimen P, Q and R for crop growth.

4. Specimen S1, S2, S3, S4, and S5 are part of an ox - plough.

a) Identify the following specimens:

S1................................................................................................................................

S2...............................................................................................................................

S3.............................................................................................................................

S4............................................................................................................................

b) What functions does specimen perform?

S1............................................................................................................................

S2..............................................................................................................................

S3................................................................................................................................

S4................................................................................................................................

S5...............................................................................................................................

c) Explain the effects on ploughing if each of the following parts is worn out.

S1................................................................................................................................

S2...............................................................................................................................

S4.................................................................................................................................

5. Specimen T1 and T2 are parts of a farm animal.

a) Identify the specimens.

T1...............................................................................................................................

T2................................................................................................................................

b) Using a knife, cut open of specimen T1 and T2 longitudinally.

i) Observe and compare the contents of the two specimens.

ii) Remove the contents from each specimen. Observe and compare the internal structure of the two specimens.

c) From your observations in (b) describe how digestion of food occurs in specimen T1.