NABTEB GCE 2021 AGRIC.SC PRACTICAL ANSWERS

Paper II: Practical – Agricultural Science

09:00am – 11:00am

 

NABTEB NOV/DEC GCE AGRIC PRACTICAL ANSWERS 2021:

 

 

(1a)

A Sieve

 

(1bi)

It is used to measure and weigh various particles of the soil

 

(1bii)

(i)it should be cleaned after use

(ii)keep in a cool and dry place

(iii)replace the worn out part

 

(1c)

Tabulate

Soil fraction | particles diameter (mm)

 

(i)clay — less than 0.001

(ii)silt — 0.002 — 0.02mm

(iii)fine sand | 0.02 — 0.2mm

(iv) coarse sand | 0.2 — 2mm

 

(1d)

(i)weighing balance

(ii)evaporation dish

(iii)bunsen burner

(iv)measuring cylinder

(v)funnel

(vi)long glass tubes

(2a)

They are used for surveying

 

(2b)

A — measuring tape

B — arrows or peg

 

(2c)

A – it is usually made of linen or fine steel sheet

– marked on one side with numeric units and with imperial unit’s on the other.

 

D – it consists of a series of dumb bell shaped links of steel wires joined together by three small rings

 

(2d)

(i)All instrument must be clean after use

(ii) keep in dry and cool place

(iii)replace worn out parts

(iv)use only for the intended function.

 

(3a)

Structure of Mammary gland (udder)

 

(3b)

A – alveolus

B – small duct

C – gland cistern

D – teat cistern

E – teat

F – sphincter muscles

 

(3c)

It aids uninterrupted production of milk to feed the young ones (Animal)

 

(3d)

(i) parturition

(ii) lactation

 

(3e)

(i) goat — 2(two)

(ii) cattle — 4(four)

(iii) sheep — 2(two)

(iv) rabbit — 10 to 14

 

(3f)

The process of collecting the product from the under is called milking. That is the act of removing milk from the mammary glands. This can be done by hand or by machine.