1. You are provided with specimen A and B.
a) Get a small amount of specimen A and moisten it with a little water. Rub it between your index finger and thumb.
i) Describe the feel of the specimen.
ii) Repeat the same procedure with specimen B and describe the feel of the specimen.
iii) Suggest the type of soil each specimen is.
A...................................................................
B....................................................................
b) Measure 50cm3 of specimen A in a 100 cm3 measuring cylinder. Measure 50cm of water and add it to the sample in the cylinder. Stir the contents well with a glass rod and leave to settle.
i) Record the volume of the contents in the cylinder, in the table below. Repeat the procedure with specimen B.
| Sample | Volume of contents after settling |
| A | |
| B |
ii) Explain your results.
c) i) Which of the two specimens A and B is better for crop growth?
ii) Give a reason.
d) Suggest how you can change specimen A so that it resembles specimen B.
2. You are provided with specimens C, D, E and F.
a) Observe them and complete the following table.
| Specimen | Identity | Economic importance |
| C | ||
| D | ||
| E | ||
| F |
b) Giving a reason in each case, suggest how specimens E and F are dispersed
i) E................................................................................................
Reason
...................................................................................................
ii) F...............................................................................................
Reason
...................................................................................................
3. You are provided with specimens G, H, I and J which are parts of a farm animal.
a) Observe the specimens and describe the appearance of each of them.
G ..................................................................................................................
H ...................................................................................................................
I ......................................................................................................................
J .......................................................................................................................
b) Give the identity of each specimen.
G ..................................................................................................................
H ..................................................................................................................
I .....................................................................................................................
J .................................................................................................................
c) To which system of the farm animal do the specimens belong?
d) To which group of farm animals does the animal from which specimens G, H, I and J were taken, belong?
4. You are provided with specimens K, L, M, O and P.
a) Identify each specimen and give its function.
| Specimen | Identity | Function |
| K | ||
| L | ||
| M | ||
| N | ||
| O | ||
| P |
b) How would you ensure that each of the specimens work efficiently?
K ........................................................................................................................
L ........................................................................................................................
M .......................................................................................................................
N ........................................................................................................................
O ...........................................................................................................................
P ........................................................................................................................
5. You are provided with specimen T and W.
a) i) Identify the specimens
T ......................................................................................................................
W .....................................................................................................................
ii) State the crop which each specimen attacks.
T ........................................................................................................
W ......................................................................................................
b) Using a hand lens observe the mouth parts of the specimens and state the mode of feeding of each specimen.
T .............................................................................................................
W .............................................................................................................
c) State two types of damage caused by each specimen on the crop it attacks.
T ..............................................................................................................
W ................................................................................................................