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-Larvae have four instars with a development period of 3-4 days
-First instar feeds by mining and emerges from the mines leaving irregular patches of damage while the upper epidermis remains intact creating a window pane effect.
-Pupation occurs in loose silk cocoon before the adult emerges.
-This pest is restricted on crucifers’ vegetables which contain mustard oils and glucosides.
-It s distribution is cosmopolitan.
-Takes 25-30 days to develop from the egg to pupa.
-Development depends on weather and generations vary with climate.
-Starts laying eggs immediately after mating.
-Eggs are deposited singly or small of 2-8.
jim items answered the question on March 11, 2019 at 15:40
- Study the diagram of a sheep shown below carefully and answer the questions that follow:
(i) What operation is usually carried out on the part labelled...(Solved)
Study the diagram of a sheep shown below carefully and answer the questions that follow:
(i) What operation is usually carried out on the part labelled A?
(ii) Give two reasons for carrying out the operation in (i) above
(iii) At what age should the above operation be carried out?
(iv)Give the methods used for the operation
(v) Name routine management practice carried out on the part labelled B
Date posted: March 8, 2019. Answers (1)
- The diagram below shows an activity of processing a farm product. Study it and answer the
questions that follow:
(a) Name the product being processed
(b) Identify the...(Solved)
The diagram below shows an activity of processing a farm product. Study it and answer the
questions that follow:
(a) Name the product being processed
(b) Identify the method used in processing the product names in the diagram
(c) Outline the procedure used when harvesting the product named in the diagram
(d) List two factors that affect quality of the product processed in the diagram
Date posted: March 8, 2019. Answers (1)
- The diagram below is part of a farm structure. Study it and then answer the questions that follow:
(a) Name part of structure represented above
(b) Identify...(Solved)
The diagram below is part of a farm structure. Study it and then answer the questions that follow:
(a) Name part of structure represented above
(b) Identify parts labelled P, Q, R, and S
(c) Give the functions of the part labeled P and S
Date posted: March 8, 2019. Answers (1)
- List four structural requirements for proper housing of farm animal to maintain good health(Solved)
List four structural requirements for proper housing of farm animal to maintain good health
Date posted: March 8, 2019. Answers (1)
- Explain five structural and functional differences between the petrol and diesel engines(Solved)
Explain five structural and functional differences between the petrol and diesel engines
Date posted: March 8, 2019. Answers (1)
- Below are illustrations showing the various parts of the Kenya top bar hive. Use the illustrationto answer the question that followii) How can a...(Solved)
Below are illustrations showing the various parts of the Kenya top bar hive. Use the illustration
to answer the question that follow
ii) How can a farmer attract bees to colonize a new hive?
iii) Outline the procedure of opening the hive to harvest honey
Date posted: March 8, 2019. Answers (1)
- The illustration below shows a method of identifying pigs. Study the diagram and answer the questions that follow:-i) On the diagram A provided below, draw...(Solved)
The illustration below shows a method of identifying pigs. Study the diagram and answer the questions that follow:-
i) On the diagram A provided below, draw the mark to indicate a pig number 147,
using the procedure of ear-notching in diagram
ii) What is the recommended stage of growth in pigs at which the ear-notching should be
carried out?
iii) State any three reasons why weight is an important routine management practice in pig
production
Date posted: March 8, 2019. Answers (1)
- State four factors which influence the selection of materials for constructing a dairy shed(Solved)
State four factors which influence the selection of materials for constructing a dairy shed.
Date posted: March 8, 2019. Answers (1)
- Below is a diagram of a fish pond, study it and answer the questions that follow
i) Label the parts marked K and L
ii) Give a...(Solved)
Below is a diagram of a fish pond, study it and answer the questions that follow
i) Label the parts marked K and L
ii) Give a reason why part M is usually deeper than the rest of the pond
iii) State three maintenance practices carried out in the pond
Date posted: March 8, 2019. Answers (1)
- Study the illustration of a farm structure below and answer the questions that follow (i) Name the parts labeled E F G H. (ii) State the...(Solved)
21 Study the illustration of a farm structure below and answer the questions that follow
i) Name the parts labeled E F G H.
ii) State the function of the parts labeled
iii) Name two chemicals preservatives used to treat the wooden parts of the structure against
insects and fungal damage
Date posted: March 8, 2019. Answers (1)
- a) Define the term fence
b) List various types of fences
c) Describe advantages of fences(Solved)
a) Define the term fence
b) List various types of fences
c) Describe advantages of fences
Date posted: March 8, 2019. Answers (1)
- List four uses of crushing in the farm(Solved)
List four uses of crushing in the farm
Date posted: March 8, 2019. Answers (1)
- Give four ways of controlling fish predators in a fish pond(Solved)
Give four ways of controlling fish predators in a fish pond.
Date posted: March 8, 2019. Answers (1)
- Below is a diagram of a cross section of a farm structure. Study it carefully and answer the
following questions.
(i) Identify the labeled parts A, B,...(Solved)
Below is a diagram of a cross section of a farm structure. Study it carefully and answer the
following questions.
(i) Identify the labeled parts A, B, and C
(ii) What is the importance of the part labeled B to the structure
(b) (i) When making concrete blocks the ratio 1:3:5 may be used. What do these figures
represent?
(ii) In a concrete mixture 1:3:5, twenty four cubic metres of sand were recommended to be
used in putting up of a foundation of a building. Find the volume of the other two
Date posted: March 8, 2019. Answers (1)
- State four features of a good calf pen(Solved)
State four features of a good calf pen
Date posted: March 8, 2019. Answers (1)
- (a) Explain the uses of various hand tools in the construction of a poultry house
(b) Describe the procedure of erecting wooden rail fence
(c) Explain various...(Solved)
(a) Explain the uses of various hand tools in the construction of a poultry house
(b) Describe the procedure of erecting wooden rail fence
(c) Explain various factors considered when choosing the construction materials for farm building
Date posted: March 8, 2019. Answers (1)
- State three factors that determine the depth and size of foundation in a farm building(Solved)
State three factors that determine the depth and size of foundation in a farm building
Date posted: March 8, 2019. Answers (1)
- State four requirements of a good maize store(Solved)
State four requirements of a good maize store
Date posted: March 8, 2019. Answers (1)
- Study the farm structure below illustrating a pass:-
(a) Identify the type of pass illustrated above
(b) Distinguish between a pass and a gate
(c) Name one type...(Solved)
Study the farm structure below illustrating a pass:-
(a) Identify the type of pass illustrated above
(b) Distinguish between a pass and a gate
(c) Name one type of live fence
Date posted: March 8, 2019. Answers (1)
- The diagram below illustrates a cross-section of a fish pond. Study it carefully and answer the
questions that follow:-
(a) Identify the parts marked A, B, C...(Solved)
The diagram below illustrates a cross-section of a fish pond. Study it carefully and answer the
questions that follow:-
(a) Identify the parts marked A, B, C and C
(b) On the diagram the points marked X, Y and Z are possible sites where fish feeding
can be done. Which is the most appropriate point for feeding?
(c) Give two reasons why the floor of the pond should be covered with lime 14days before
filling it with water
(d) Why should part marked B be screened?
(e) State three maintenance practices carried out on the structure
Date posted: March 8, 2019. Answers (1)