1. You are provided with
- Two filter funnels
- Glass wool
- 2 soil samples labelled A and B.
- 2 measuring cylinders.
a) Label the two filter A into funnel A and all the soil labelled B into funnel B. add 100 cm3 of water to each of the funnels and collect the water passing through the soil samples for 15 minutes.
Measure the volume of water that has passed through each soil sample
Record your observations in the table below:
| Vol. of water added | Vol. of water that passed through soil | Vol. of water retained by soil |
| Soil A 100cm3 | ||
| Soil B 100cm3 |
b) (i) Name the soil properties being tested in the experiment.
(ii) How are the two properties related to size of soil particles?
c) From your experiment, state with reasons which of the two soil samples is more suitable for crop production.
2. Specimen G, D, E and F provided are common livestock feeds observe them and fill in the table below:
| Specimen | Identity | Type of feed | Why it is fed to livestock |
| C | |||
| D | |||
| E | |||
| F |
3. Specimen G is a component of the electrical system of a tractor.
a) (i) Identify the specimen
(ii) What is its function in the tractor?
b) In the space below, draw and label specimen G. state your magnification.
c) Mention three factors that may affect the performance of specimen G.
d) How would you service specimen G to ensure it performs efficiently?
4. Carefully observe the sick bird provided.
a) List the signs or symptoms of sickens you observe on this bird.
b) From the signs or symptoms you have listed in (a) above suggest the disease this bird is suffering from.
c) How is the disease you have identified treated?
d) What measure would you take on a poultry farm to prevent the outbreak of this disease?
5. Observe specimen H which is a crop plant.
a) State, with reasons, the family to which the plant belongs.
b) How do the structures on the roots of H develop?
c) What type of association has resulted in the development of the structures in (b) above?
d) Of what benefits is this association?
(i) To specimen H,
(ii) To other crops plants?
6. Observe specimens P, Q, R, S, T, U, V and W which are common weed plants.
a) Identify each of the specimens.
P ...................................................... T .........................................................
Q ..................................................... U .......................................................
R ..................................................... V .......................................................
S ...................................................... W .....................................................
b) Classify each of the specimens according to the headings.
Annual weeds perennial weeds
........................................... ...........................................................
c) (i) Which three cultural practices would you use to control the weeds above?
(ii) Which one of the weeds can be controlled by biological means?