Agricultural Science
WAEC 2000
(a) Identify specimens A, B and C
Specimen A; Specimen B; Specimen C;
(b) Give one function of each of Specimen A, B and C
(c) State two ways of maintaining each of specimen A and B
(d) Name three other farm implements that perform the same function as specimen B
(e) Mention two precautions to be observed when using specimen B
Explanation
(a) ldentification of Specimens:
- A - Nut and bolt;
- B - Knapsack sprayer;
- C - ldentification tag.
(b) Functions of specimens:
A is used in tightening, fastening, fixing or holding joints together.
B is used for spraying or applying fungicides, insecticides.
- is used for spraying liquid fertilizers.
- is used for spraying herbicides.
C is used for identification of animals.
(c) Ways of maintaining specimen A:
- Grease to avoid rusting.
- Straighten bent bolt or nut.
- Rethreading the worn-out threads.
- Store always in cool, dry place.
Ways of maintaining specimen B
- Wash and clean the tank, the filters and nozzles with water after use.
- Check the sprayer for leakage and any leakage should be blocked.
- Replace damage or worn-out parts, e.g., filters and nozzles.
- Remove the nozzles, clean and store seperately.
- Store the sprayer under cover.
- Free the nozzles of all blockages or clogs.
- Turn the container upside down after washing to drain properly.
(d) Other implements that perform the same function as specimen B are:
- Motorized sprayer
- Boom sprayer
- Electrotyne sprayer
- Hand sprayer
(e) Safety precautions to be observed when using specimen B include:
- Wear protective clothing and a nose mask.
- Avoid eating. drinking or smoking.
- Wash/bath well after spraying.
- Do not blow a blocked nozzle with the mouth.
- Ensure that spraying is not against the wind.
- Avoid walking on freshly sprayed plots.
- Follow carefully instructions on the use of chemical to be sprayed
Report an Error
Ask A Question
Download App
Quick Questions
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}