1. The farming system that makes effective use of available soil nutrients in a growing season is

mixed farming crop rotation land rotation mixed cropping

2. A system of farming that leads to continuous destruction of virgin forest is

pastoral farming mixed farming shifting farming mixed cropping

3. The cultivation of different crops on different plots of a farmland in a definite cycle is called

shifting cultivation mixed cropping land rotation crop rotation

4. Leguminous crops may often be cultivated to add

nitrogen to the soil carbon to the soil protein to the soil potassium to the soil

5. An example of inorganic fertilizer is

farmyard manure ammonium nitrate poultry dropping cow dung

6. The ability of soils to supply the right amounts of essential nutrients to plants is known as

soil fertility soil consistency soil structure soil texture

7. Washing down of soil nutrients beyond the reach of roots of plants is referred to as

aeration percolation leaching infiltration

8. A farming system which requires at least three years programme is

mixed cropping crop rotation organic farming mixed farming

9. Which of the following crops should be planted after cassava in crop rotation?

yam onion cocoyam cowpea

10. The part of the soil that is most important for the growth of plants is

clay humus sand silt

11. Which of the following practices is NOT a principle of crop rotation?

Deep-rooted crops should be followed by shallow-rooted crops. Legumes should be added to the rotation programme. Crops that are closely related should follow each other. Fallow periods should be allowed during the time of rotation.

12. Growing crops and rearing animals on the same piece of land at the same time is called

mixed farming monoculture mixed cropping shifting cultivation

13. Growing only one type of crop on a piece of land year after year is called

shifting cultivation mixed cropping mixed farming monoculture

14. A farmer plants yam, groundnut and pepper together on one plot in the same season. This farming system is

mixed cropping monoculture shifting cultivation mixed farming

15. A household keeps pigs in a pen and uses the pig dung to feed its vegetable beds. This farming system is

mixed cropping monoculture mixed farming shifting cultivation

16. Which of these is an advantage of mixed farming?

The farmer must buy all fertilizer A pest attack on one crop can destroy the whole farm Only one crop needs to be managed Animal dung can be used as manure for the crops

17. Which of these is a disadvantage of monoculture?

Weeds never grow A disease can destroy the whole crop Machines cannot be used Farmers get many kinds of food

18. A farmer clears a piece of forest, grows food crops for a few seasons until the soil loses its nutrients, then moves to a new plot. This system is

crop rotation monoculture shifting cultivation mixed farming

19. Shifting cultivation becomes difficult when land is scarce because

old plots cannot be left to rest and regain fertility farmers get more forest to clear crops grow faster on scarce land soil gains nutrients when it is farmed continuously

20. Why is it useful to mix a creeping crop such as groundnut with a tall crop such as maize?

The creeping crop stops the maize from getting water The creeping crop shades the soil, reduces weeds and keeps the soil moist The creeping crop makes the soil hotter and drier The creeping crop makes weeds grow faster