In a crop rotation system, it is usually preferred that cassava comes last in the rotation because it?

• A. adds nitrogen to the soil
• B. is a shallow feeder
• C. is a deep rooted crop
• D. is a perennial crop

The twisting, wrinkling and mottling of leaves are symptoms of

• A. nematode attack
• B. viral diseases
• C. water deprivation
• D. fungal attack

In the carbon cycle, atmospheric carbon dioxide is replenished by

• A. respiration
• B. transpiration
• C. lightening
• D. dentrification

A protozoon organism causes

• A. coccidiosis
• B. anthrax
• C. rinderpest
• D. apergillosis

Reforestation is the

• A. organised planting of trees in areas from which forest trees have been removed
• B. establishment of forests in areas where there are previously none
• C. development of young treees to replace old mature trees
• D. planting of forest trees on an unproductive land

Breeding in self-pollination crops can be regarded as

• A. line breeding
• B. cross-breeding
• C. inbreeding
• D. hybridization

A farm tool used for harvesting heads of rice is the

• A. shear
• B. secateur
• C. sickle
• D. rake

The type of soil recommended for pond foundation is

• A. silt
• B. clay
• C. sandy loam
• D. humus

The correct sequence in preparing new land for cropping is usually

• A. stumping, laying out of farm, ridging and tiling
• B. laying out of farm, ridging, stumping and tilling
• C. tilling, stumping, laying out of farm
• D. ridging, laying out of farm, tilling and stumping

Which of the following equipment is not used in farm surveying?

• A. Gunter's chain
• B. measuring tape
• C. ranging pole
• D. pick axe