What are the answers to the following multiple-choice questions about plants, soil, and agriculture?

Here are the solutions to the questions:

Left Column:

1. All these are found as part of the soil except:

   • Nylon is a synthetic material and not naturally found in soil. Earthworms, termites, and dead plants/animals are natural components.
   • The correct option is (b) nylon.

2. Plants serve as ______ to human beings.

   • Plants provide food, are used in medicine, and can be a source of income.
   • The correct option is (d) all listed.

3. ______ are unwanted plants growing where they are not needed.

   • This is the definition of weeds.
   • The correct option is (a) Weeds.

4. These are farm or crop pests except:

   • Grass cutters, monkeys, and beetles can be farm pests. "Dot" is not a recognized farm pest.
   • The correct option is (b) dot.

5. ______ is a type of teeth.

   • Incisors, molars, and canines are all types of teeth.
   • The correct option is (d) All mentioned.

6. ______ is an example of modern agricultural tools.

   • Tractors and harvesters are modern agricultural tools. A hoe is a traditional tool.
   • The correct option is (d) A and C.

7. The removal of top soil is ______

   • The removal of topsoil by natural agents like wind or water is known as erosion.
   • The correct option is (a) erosion.

8. ______ is a mixture of gases.

   • Air is a mixture primarily composed of nitrogen, oxygen, and other gases.
   • The correct option is (d) Air.

9. ______ is an example of primary colour.

   • In the additive color model (RGB), both green and red are primary colors.
   • The correct option is (d) A and B.

10. ______ is used for cutting scissors.

    • Scissors use blades to cut.
    • The correct option is (b) Blade.

Right Column (Social Studies - Topic: Housing):

1. People live in a ______

   • People typically reside in a house.
   • The correct option is (c) house.

2. These are used in constructing a house except ______

   • Water, cement, and gravel are common construction materials. Pepper is a spice.
   • The correct option is (d) pepper.

3. To acquire a building in Nigeria, one needs ______

   • An approved survey plan, deed of assignment, and certificate of occupancy are all essential documents for property acquisition in Nigeria.
   • The correct option is (d) all listed.

4. ______ is a type of house in Nigeria.

   • A bungalow is a common type of residential building in Nigeria.
   • The correct option is (c) Bungalow.

5. List six (6) types of houses in Nigeria.

   • Six types of houses commonly found in Nigeria include:
     • Duplex
     • Bungalow
     • Self-contain
     • Story buildings
     • Mud houses
     • Bamboo houses
   • The answer is: Duplex, Bungalow, Self-contain, Story buildings, Mud houses, Bamboo houses.

6. ______ works in construction of houses.

   • Plumbers install water systems, and carpenters work with wood structures in house construction.
   • The correct option is (d) A and C.

7. Bricklayer arrange ______ in the house.

   • Bricklayers are responsible for laying bricks or blocks to form walls and other structures.
   • The correct option is (c) bricks/blocks.

8. ______ material should be used to build houses.

   • Using quality materials ensures the safety and durability of a house.
   • The correct option is (b) Quality.

9. A family lives in a ______

   • A family typically resides in a house.
   • The correct option is (c) house.

10. The foundation of all houses must be ______

    • A solid foundation is crucial for the stability and longevity of any building.
    • The correct option is (d) solid.