uganda national examination board past papers for agriculture 1999

PAPER 1
THEORY
PART A
Answer all the questions in this part. For question 1 circle the letter corresponding to the best answer. For questions 2 to 5 write all answers in the spaces provided. You are advised not to spend more than 30 minutes on this part.
1. a) Brown sunken and water soaked sports on bean pods and stems are a sign of the disease called.

A. Bean rust

B. Bacterial blight

C. Bean anthracnose

D. Bean mosaic

b) The demand for agricultural products is said to be inelastic because a

A. Slight increase in price produces a big drop in demand

B. Large increase in price produces a slight decrease in demand

C. Slight increase in price produces a slight increase in demand

D. Large increase in price produces a large increase in demand.

c) Which one of the following cattle diseases is treated using a tracer and cannula?

A. Mastitis

B. Calf scours

C. Bloat

D. Calf pneumonia

d) It is not advisable to apply a nitrogen fertilizer to a mixed grass legume pasture because

A. Nitrogen suppresses the uptake of phosphorous by grass

B. The legume fixes enough nitrogen for the pasture

C. Grass may over grow and suppress the legume

D. Nitrogen may reach toxic levels for the legumes

2. a) Give four advantages of early planting in crop production.

b) Give four considerations to make in order to ensure hich quality of produce during harvesting.

3. a) State three conditions under which you would prefer to use a disc plough instead of a mould broad plough.

b) Give three disadvantages of using a disc plough.

4. a) Give four ways in which nitrogen may be lost from the soil.

b) State four symptoms of nitrogen deficiency in plants.

5. a) State four signs of good health in cattle.

b) Give four effects of diseases on farm animals.

PART B
Answer four questions including at least one from each section. Write all your answers in the booklet provided.

SECTION I
MECHANISATION AND FARM MANAGEMENT
6. a) Using examples, explain the importance of a farm structures.

b) Outline advantages and disadvantages of using wood as a material for making farm structures.

7. a) Give the meaning of the following:

i.) average product

ii.) marginal product

iii.) production function

b) Outline the factors that may affect the demand for agricultural products.

8. a) Describe two farming practices which demonstrate diversification in agricultural production.

b) Outline the advantages of diversification in farming.

SECTION II
CROP PRODUCTION
9. Outline the steps to be followed in raising tomato seedlings from nursery bed preparation until the seedlings are transplanted.
10. a) How can disease spread in a crop?

b) Describe the methods that can be used to control crop diseases.

11. a) Describe the factors that should be taken into account when deciding spacing for a given crop or variety.

b) Outline the advantages and disadvantages of broadcasting as a method of planting.

SECTION III
ANIMAL PRODUCTION
12. a) Describe the factors that affect the distribution of livestock in Uganda.

b) What is the role of cattle in the livelihood of a Uganda farmer?

13. a) What problems do ticks cause on farm animals?

b) Describe the life cycle of a host tick.

14. a) Describe the process of egg formation in a hen.

b) Outline the conditions necessary for the proper hatching of eggs.

PAPER 2
PRACTICAL

Each candidate should be provided with the following:

Silage labelled P

Hay labelled Q

Diary meal labelled R

Fresh grass (panicium maximum leaves) labelled S

Tomato plant affected by late blight labelled H

Bean seeds attacked by bean bruchids labelled I

Top soil labelled A

Sub soil labelled B

(Both soils should be damp, in a state that can be molded.)

Cross cut saw labelled J₁

Jack plane labelled J₂

Marking gauge labelled J₃

Bastard file labelled J₄

Rasp file labelled J₅

Hacksaw labelled J₆

Claw hammer labelled J₇

Mallet labelled J₈

Wood chisel labelled J₉

Try square labelled J₁₀

A reproductive system of a hen labelled G, with some of its parts labelled as:

Infundibulum (funnel) labelled G₁

Magnum labelled G₂

Isthmus labelled G₃

Uterus labelled G₄

Cloacae labelled G₅

1. Specimens P, Q, R and S are common livestock feeds.

a) Observe and identity each specimen:

P ..................................................................................................................

Q .................................................................................................................

R ..................................................................................................................

S ...................................................................................................................

b) Comment on the value of each specimen as a livestock feed.

P ..................................................................................................................

Q ..................................................................................................................

R ..................................................................................................................

S .................................................................................................................

c) Carefully examine specimen R and suggest the ingredients that may have been used for making it.

2. Specimen H is a crop plant attacked by a disease, while specimen I is a stored crop produce affected by a pest.

a) (i) Describe the observable signs of the disease on specimen H

(ii) Name the disease and the organism that has caused it

Disease: .......................................................................................................

Causal organism: ........................................................................................

(iii) How is the disease named in (a)(ii) above spread from one plant to another?

(iv) State one method of controlling the disease named in (a)(ii) above.

b) (i) Describe the damage observed on specimen I.

(ii) Name the pest that has caused the damage observed on the specimen.

(iii) Suggest two ways of controlling the pest named in (b) (ii) above.

3. You are provided with specimens A and B.

a) Examine the specimens and state three differences between them

Specimen A	Specimen B
i)...................... ii)..................... iii)....................	.......................... ........................... ..........................

Give the identity of each specimen.

Specimen A: ..................................................................................................................

Specimen B: ..................................................................................................................

c) Using one specimen at a time, moisten a little amount of each of the specimens in your palm and try to mould it into a ring. Record your observations on each specimen.

Specimen A:

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

Specimen B:

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

d) From your observation in (c) above, what conclusions can you draw about the composition of the two specimens?

Specimen A:

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

Specimen B:

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

e) Which of the two specimens is better suited for crop growth?

4. You provided with specimens J₁ to J₁₀ which are workshop tools.

a) Identify each specimen.

J₁........................................................... J₆ ............................................................

J₂ .......................................................... J₇ .............................................................

J₃ .......................................................... J₈ ............................................................

J₄ .......................................................... J₉ ............................................................

J₅ .......................................................... J₁₀ ...........................................................

b) From among the specimens you have identified in (a) above, select five appropriate ones and describe how you would use them in the construction of a simple feed trough for poultry.

5. You are provided with specimen G.

a) Name the parts labelled G₁, G₂, G₃, G₄ and G₅ on the specimen.

G₁ .........................................................................................................................

G₂ ..........................................................................................................................

G₃ .......................................................................................................................

G₄ .....................................................................................................................

G₅ .....................................................................................................................

b) Give one function of each of the parts you have named in (a) above.

G₁ .....................................................................................................................................

G₂ ....................................................................................................................................

G₃ ..................................................................................................................................

G₄ ................................................................................................................................

G₅..................................................................................................................................