Agricultural science for SS1

1.One of these is not among the three major types of rock. A. Igneous B. Plutonic C. Sedimentary D. Metamorphic.
2.One of these rocks is formed as a result of intense heat and pressure on an existing rock. A. Metamorphic B. Igneous C. Sedimentary D. Volcanic.
3.Fossils are……….. A. Dead rock B. Remains of plants an animals C. Crystal rock D. Graphite.
4.If rocks come in strata, it means that they ………. A. They are in layers B. They are shining C. They are opaque D. They can break easily.
5.The cooled and solidified materials that form igneous rock is called ……. A. Magma B. Fossils C. Crystals D. Rock minerals.
6.The act of using wood to help crops stand erect is …….. A. Staking B. Pruning C. Spacing D. Mulching.
7.One of these do not belong to the group. A. Seed box B. Poly pot C. Watering can D. Nursing bed.
8.All of these are used as mulching materials except……. A. Wood shaving B. Saw dust C. Dry grasses D. Animal excreter.
9.All of these are transplanting materials except ……….. A. Hoe B. Cutlass C. Hand trowel D. Secateur.
10.Young plants raised from seeds are ……… A. Vegetative crops B. Seedlings C. Shading D. Supplying.
11.The botanical name of ground nut is……… A. Capsicum spp B. Arachis hypogea C. Pennisetum purpurcum D. Cannabis sativa
12.On a pH scale 7 is ……. A. Neutral B. Acidic C. Alkaline D. Ions.
13.Ground nut is propagated by ……… A. Seed B. Stem C. Budding D. Grafting.
14.Ground nut could be stored in all these places except …….. A. Rhombus B. Silos C. Sack D. Barns.
15.In pepper cultivation ……… is the fertilizer to be used. A. Ammonium Sulphate B. NPK C. Phosphorus D. Calcium.
16.Cotton belongs to a group of crops called ……… A. Cotton crop B. Fibre C. Oil D. Cereal.
17.One of these is a general cultural practice during the cultivation of any crop. A. Mulching B. Weeding C. Transplanting D. Supplying.
18.The word cultivars means. A. Cultivation B. Breeds C. Varieties D. Spacing.
19.In tapping if rubber, is necessary to prevent coagulation. A. Sodium sulphate B. Aluminium slip C. Tapping knife D. Tappind bucket.
20.The process of soil formation is called 21. ……… A. Rock weathering B. Carbonation C. Solidification D. Hydrolysis.
22.All these are agents of physical weathering except …. A. Wind B. Ice C. Rain water D. Earth worm.
23.All these are factors of soil formation except …….. A. Time B. Parent material C. Biotic factor D. Energy.
24.The growing of two or more crops on the same piece of land is called …… A. Mono cropping B. Mixed cropping C. Mixed farming D. Crop rotation.
25.The group of organisms that use sunlight to manufacture their food are called …….. A. Autotrophs B. Heterotrophs C. Autecology D. Syncology.
26.All these are physical properties of soil except…….. A. Texture B. Structure C. Temperature D. Sedimentation.

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Theory part

1a. Explain the formation of igneous rocks.
1b. Explain how time affects soil formation (10 marks).

2. List out the five (5) physical properties of soil and explain soil porosity. (10 marks )
   3a. Explain why sandy soil will drain out more water than any other soil sample.
   3b. Explain these terms; supplying, pruning. (10 marks)
3. Extensively write out about the harvesting of rubber (tapping of rubber). (10 marks)
4. Explain the interactions between the biotic and abiotic factors in a fish pond. (10 marks).