Which of the following parts of plants are normally used for vegetative propagation?
- A. stem, root and seed
- B. stem, root and flower
- C. fruit, leaf and root
- D. leaf, flower and stem
- E. stem, root and leaf
The side effects of the various preventive and control measures of pests and diseases of crops include the following except
- A. environmental pollution
- B. poisoning of wildlife
- C. disruption of the ecosystem
- D. improvement in the quality of farm produce
- E. exposure of the farmer to health hazards
Trees for lumbering will be regularly available in Nigerian forests if
- A. there is an increase in annual rainfall
- B. fertilizers are applied to trees
- C. timber is no longer used for construction purposes
- D. a tree is planted for everyone felled
- E. wood is no longer used as fuel
Which of the following plant diseases is not caused by fungus
- A. Black arm
- B. Rice blast
- C. Rice smut
- D. cassava leaf-spot
- E. Maize rust
28. The freshly cut forage crops fed to livestock in their housing units are referred to as
- A. paddock grazing
- B. rotational grazing
- C. silage
- D. hay
- E. soilage
Which of the following explains the term pruning?
- A. removal of unnecessary branches of trees crops
- B. Adequate spacing of seedlings during transplanting
- C. Removal of diseases or dead crops from the farm
- D. hardening of seedlings in the nursery
- E. Ripening of fruits before the development of embryo
Which of the following is the most suitable raw material used in the production of pulp in paper industry?
- A. Hardwood
- B. Softwood
- C. Heartwood
- D. Sapwood
- E. Plywood
Gametes are produced through the process of
- A. fusion
- B. meiosis
- C. mitosis
- D. pollination
- E. fertilization
Soil-borne diseases of crops can be effectively reduced by
- A. terracing
- B. crops rotation
- C. liming
- D. irrigation
- E. mulching
Which of the following forest trees is a soft wood?
- A. Mahogany
- B. Teak
- C. Shea-butter
- D. Ebony
- E. Gmelina
The natural grasslands of West Africa are generally located in the
- A. sahel region
- B. guinea savanna
- C. mangrove area
- D. equatorial region
- E. deciduous forest
An area of land where fruit trees are cultivated is commonly called
- A. an orchard
- B. a plantation
- C. a nursery
- D. an estate
- E. a garden
The most appropriate farm machinery for breaking soil is the
- A. harrow
- B. plough
- C. ridger
- D. tractor
- E. cultivator
The windmill is normally used as a source of power in
- A. pumping well water
- B. soil drainage
- C. ridging
- D. erosion control
- E. seed broadcasting
Which of the following tools is the best for making seed beds?
- A. hand fork
- B. mattock
- C. shovel
- D. spade
- E. axe
Which of the following factors will cause etiolation in crops?
- A. law humidity
- B. high light intensity
- C. high humidity
- D. low temperature
- E. absence of light
A soil with low PH value can be improved by the addition of
- A. ammonium sulphate
- B. calcium carbonate
- C. sodium chloride
- D. sodium nitrate
- E. magnesium phosphate
Which of the following is not an effect of manuring on the soil?
- A. adding plant nutrients to the soil
- B. releasing adequate plant nutrients of the appropriate time
- C. facilitating soil aeration and movement of soil moisture
- D. enhancing the activities of soil microorganisms
- E. improving the structure of the soil
The removal of excess water from the soil surface and the upper subsoil is known as
- A. irrigation
- B. drainage
- C. evaporation
- D. surface turn-off
- E. dehydration
Chlorosis observed along the veins of leaves is a characteristic symptom for the deficiency of
- A. nitrogen
- B. magnesium
- C. potassium
- D. phosphorus
- E. sulphur
Which of the following is not an advantage of drip-irrigation?
- A. fertilizers can be applied through the system
- B. there is reduction in the concentration of salt in the root zone
- C. the system operates on a much lower line pressure than spinkler system
- D. its efficiency on water distribution in steep slopes is poor
- E. there is considerable maximization on use of water