Nabteb 2017 Biology Complete Answer now Available@ askloaded

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Biology - Theory - Answers
1ai )
Cell: This is the smallest living organisms e . g nerve Cell , Phloem cells
1aii )
Tissue : This consists of 2 or more different types of Cell aggregatIng together to perform a specific function e .g xylem tissue ,none ,Cartilage
1aiii )
Organ : This is a group of similar tissue forming a layer in an organism which perform a specific function e . g leaves ,brain
1aiv )
System : This is a group of similar organs which work together to perform a specific function e . g digestive ,skeletal etc
1b)
The animal- like characteristics of Euglena :
- Possession of flagellum used for movement
- Presence of eyspot to enable it respond to light
- Possession of ContraCtile vacuole used for excretion
Two plant
- Possession of chloroplasts which enables it to Carry out photosynthesis
- Possession of pyrenoids where starch is stored .
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2a )
Soil erosion is the clearing away of the top soil . Top soil is the top layer of soil and is the most fertile.
2b)
Soil components .
- organic matter - e . g animals dung
- inorganic matter - e . g gravel
- soil air - e .g oxygen
- Soil water -e . g hydroscopic water
2c )
Ways in which soil fertility can be increased .
- by shifting cultivation
- by applying manure and fertilizer
- by crop rotation
2cii )
Ways in which soil fertility can be reduced.
- excess of other nutrients
- by crop removal
- by erosion
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3a )
- Corn : This is vertical , fleshy , underground stem that acts as a vegetative reproductive structure in certain seed plants . E .g crocus.
- Bulb : This is a modified underground stem which has more than one or more buds enclosed in fleshy modified leaves or scales which supply energy to the bulb when they start to grow . E. g onions.
- RhizomeThis is a horizontal underground stem which can send out bath shoots and roots from its nodes .
3b) Tabulate
Mitosis | Meiosis
- Two offspring cells are formed | Four offspring cells are formed
- There is no crossing over | Crossing over occurs
- It involes only one stage of divison| It involves two stages of division
3c )
Procedure/ method
- first boil the leaf for 4 5 6 minutes so as to Kill the cells
- deep the leaf into a test tube containing 70% of alcohol to decolourise the leaf
- the decolourised leaf is dipped into a beaker containing hot water to decolourise it
- pour iodine solution on the leaf
- on the second leaf pour iodine solution and blue - Black colouration is formed , it Shows the presence of starch on the leaf.
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4a )
i ) Amoeba - Body surface
ii) Mosquito larva -
iii ) Insect - Trachel system
iv ) flowering plants - stomata and lenticels
v) Birds - Lungs
vi ) Lizard - Lungs
vii) Dog - Lungs
4bi )
Tissue respiration : This is defined as the oxidation of organic food substances within the cells leading to the release of energy , carbon dioxide and water
4bii)
DRAW THE DIAGRAM
4c )
C 6 H 12 O 6( glucose) + 6O 2 - -- > 6CO 2 + 6 H 20
( energy )
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5a )
An efficient transport system is necessary in complex multicellular organism because of the following : -
- Many cells are Situated far away from other .
- the surface area to volume rates in complex multicellular organism is too small
- A conducting or linking system becomes necessary to connect isolated groups of cells
- diffusion alon can not be used for transport of materials to isolated cells
5bi )
Similarities
- diffusion plays a major role in transportation in both plants and animals
- liquid medium is required for transportation in both plants and animals
- tubular or cylindrical vessels are necessary in plants and animals
5bii)
Tabulate
Transport in Animals | Transport in plants
- Blood is the medium of transportation | Cell sap is the medium of transportation
- Heart generates forces for transportation of nutrients | Root pressure or transportation genrerates force for pull
- The transport medium is made up of tissue | The transport medium is not tissue
5ci )
Red blood cells : They arforce for pull
- The transport medium is made up of tissue | The transport medium is not tissue
5cii )
Red blood cells : They are small, round and biconcave disc -like in shape . They have no nucleus
5ciii )
Blood platelets : They are tiny irregular cell fragments without nucleus . They are produced in the red bone marrow
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6ai )
i ) Supratidal or splash zone
ii) Intertidal or Neritic zone
iii ) littoral or Sublidal zone
6aii )
- Brony fish
It posses salt secreting glands in their gills or eyes to enable them maintain osmo - regulation
- Shark
It has ability to retain urea in this body to cope with high salinity
- periwinkle
They posses long for breathing and foot for attachment
6bi )
Phenotype : This is the total sum of observable features of an organism
6bii)
hybrid : This is an offspring from a cross between parents that are genetically different but of the same species
6iii )
Genotype : This is the total sum of the genes inherited from both parents
6iv )
Recessive gene : This is the gene that control recessive characters
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Nabteb 2016 OFFICE PRACTICE Obj And Theory Answers – now available

-The knowledge of office practice provides a machinery for coordination, it enhance production of competent clerical service to all business who needs it -Offline practice is regarded as clearing house of a business unit, icon of business organization and modern to standard way of business and construction. Hence, the relevance of office practice to business education is to facilitate effective construction of work and packaging -Efficient and economic running of a business is governed by the knowledge of office practice and its relevance in business education -The relevance of office practice to business organization or education can be regarded as the brain of business unit. Protocol,settings, strategies and regulation are studies under office practice to regulate a business organization -Reliability is quality and trust assurance seen in an organization to stimulate customer patronage, office practice, practices and possess these which are used for business 8a) i) credit transfer is a system whereby successfully completed units of study contributing towards a degree or diploma can be transferred from one course to another. ii) i)Interest Rates ii)Promotional Period iii)Balance Transfer Fees iv)Annual Fee 8b) -Crossed cheque i)crossed cheque is a cheque that is payable only through a collecting banker and not directly at the counter of the bank. ii)cross cheque means, the cheque can be deposited in account only iii)Cross cheque means cheque amount only paid to bank account -Open cheque i)An open cheque is a cheque that is not crossed on the left corner and payable at the counter of the drawee bank on presentation of the cheque. ii)an open cheque means, the the bearer can withdraw cash. iii)open cheque cash withdrawal ======================== 1a) i)to create coordination to customer ii)efficient productivity and organization iii)layout and settings iv)education and self development v)assest management and development 1b) i)Office acts an information centre, rather a data bank for a business unit. It collects information from both internal and external source, records it, arranges and analyses it and provides it to management at the time of necessity. So all sorts of information whether past or present are available in office. ii)Office acts as on intermediary agency as it connects different departments with outsiders. It establishes linkage of the business unit with its suppliers, customers, Government and the general public as a whole. iii)It provides a machinery for co-ordination. It provides competent clerical services to all in the business who needs it. Different departments like production, distribution and finance are interlinked and this linkage is made possible through the help of office. iv)Office as a control centre of the organization since office assists management m taking decision and implementing them. It is a place where policy decisions originates and where it is executed. v)It is regarded as a channel through which written communication moves from top to bottom and bottom to top.

» Nabteb 2016 Agric Practical Answers – May/June Expo

016 1a) SpA-Sandy soil SpB-Clayey soil SpC-Loamy soil 1b) Specimen A -It has low water retention capacity -It has large air pores Specimen B: -It has high retention capability -It has small pores Specimen C: -It has high humus content -It has average water retention capacity 1c) -By adding liming materials like slake lime -By adding manure or other organic matters 1d) -Cowpea and groundnut 1e) i-Specimen C ii-Specimen B +++++++++++++++++++++++ 2a) D-Hand trowel E-Axe F-Knapsack G-Spade H-Sickle 2b) Specimen D -It is used for transplanting nursery seedlings -It is used for conveying manure Specimen E -Axe for cutting down of trees -For breaking logs of wood into desired shapes Specimen F -It is used for irrigation -It is used for spraying herbicides and other agrochemicals Specimen G -For packing of gravel from one place to another -For conveying manure Specimen H -It is used for harvesting fruits -For trimming and prunning of plant parts 2c) Specimen D -Keep in a cool and dry place -Clean after use Specimen E -Keep away from direct sunlight -Clean after use Specimen F -Wash after use -Lubricate mettalic parts regularly Specimen G -Clean after use -Keep away from direct rainfall Specimen H -Clean after use -Keep in cool dry place 2d) Farm equipment +++++++++++++++++++++++ 3a) I-Cotton seed J-Cocoa pad K-Cassava tuber 3b) Bournvita and Milo 3d) I-Cotton ball worms and aphids J-Rodents and mealybugs K-Mealy bugs and grasshopper 3e) I-Carbonhydrate and lipids J-Vitamins and minerals K-Carbohyrate and mineral +++++++++++++++++++++++ 4a) L-Skin of poultry M-Piece of horn N-Pork meat O-Tin milk 4b) L-Class aves M-Mammalia(Ruminants) O-Dairy animals 4c) Lactation 4d) -Polled condition -It is used for decorative purpose 4e) Colostrum 4f) Specimen O -Provision of protein when consumed -Source of food for new born animals

2016/2017 NABTEB Time Table (May June) NABTEB MAY/JUNE 2016 TIMETABLE

+++++++++++++++++++++++++++++++++++++ Wednesday 4th May 2016 Biology paper II practical 9:00am-11:00am +++++++++++++++++++++++++++++++++++++ Monday 9th May 2016 Agricultural science paper II practical 3:30pm-5:30pm +++++++++++++++++++++++++++++++++++++ Tuesday 10th May 2016 Information and communication Technology paper II practical 9:00am-12:00pm +++++++++++++++++++++++++++++++++++++ Wednesday 11th May 2016 Chemistry Paper II practical 9:00am-11:00am +++++++++++++++++++++++++++++++++++++ Thursday 12th May 2016 Physics Paper II practical 9:00am-11:45am +++++++++++++++++++++++++++++++++++++ Friday 13th May 2016 Animal Husbandry Paper II practical 9:00am-11:30am +++++++++++++++++++++++++++++++++++++ Monday 23rd May 2016 Biology (Essay and Obj) 9:00am-11:20am Commerce (Obj and Essay) 1:00pm-4:20pm +++++++++++++++++++++++++++++++++++++ Tuesday 24th May 2016 Literature in English (obj and prose) 1:00pm-3:00pm +++++++++++++++++++++++++++++++++++++ Wednesday 25th May 2016 Physics (obj and Essay) 9:00am-11:45am Financial accounting (Obj and Essay) 1:00pm-4:30pm +++++++++++++++++++++++++++++++++++++ Thursday 26th May 2016 Office practice (Obj and Essay) 9:00am-12:20pm Animal Husbandry (Obj and Essay) 9:00am-11:40am Geography (Obj and Essay) 1:00pm-4:00pm +++++++++++++++++++++++++++++++++++++ Saturday 28th May 2016 English language (Obj and Essay) 9:00am-10:40am English Language (Test of Orals) 12:00pm-2:30pm Civic Education (Obj and Essay) 3:00pm-5:50pm +++++++++++++++++++++++++++++++++++++ Monday 30th May 2016 Mathematics (Obj ) 9:00am-10:30am Mathematics (Essay) 12:00pm-2:30pm Information and communication Technology (Obj and Essay) 3:00pm-5:40pm +++++++++++++++++++++++++++++++++++++ Tuesday 31st May 2016 Agricultural Science (Obj and Essay) 9:00am-11:30am +++++++++++++++++++++++++++++++++++++ Wednesday 1st June 2016 Economics (Obj and Essay) 9:00am-12:20pm +++++++++++++++++++++++++++++++++++++ Thursday 2nd June 2016 Chemistry (Obj and Essay) 9:00am-11:30am +++++++++++++++++++++++++++++++++++++ Friday 3rd June 2016 Literature in English (Drama and Prose) 9:00am-11:00am +++++++++++++++++++++++++++++++++++++

Nabteb Biology pract answers =

1i) it essential for photosynthesis because it aids chlorophyll formation 1ii) it is nucleus 1iii) adenosine triphosphate(ATP) 1iv) it aid exchange of gas and excretion in plant 1v) hepatic artery 1vi) a)water b)latex c)oxygen d)oils and rasins 1vii) -it aids osmoregulation -it also helps in excretions 1viii) -elephant tree -gactus tree 1ix) -they are protaineous in nature -they accelerate the reate of chemical reaction 1x) the process is homeostasis 1xi) -nose -eye -ear -skin 1xii) X and Y chromosomes (sex chromosomes) 1xiii) the calyx 1xiv) -yellow fever -chinken pox 1xv) -through the water we drink -through the food we eat ================================== 2a) specimen A is ground nut plant specimen B is maize plant 2b) A -net venation B -parallel venation 2c) A -epipeal permination B -hypogeal permination 2d) the reaming residue of cowpen or ground nut plant improve the organic matter of the soil when it decay 2e) A -fat and oil B -carbonhydrate 2f) TABULATE SPECIMENS A i)possession of rough vein ii)the leaf has parallel vein iii)the surface of the leave is rough iv)the veins are scattered SPECIMENS B i)possession of smooth vein ii)the leaf has net vein iii)the surface of the leaf is smooth iv)the veins are well arranged. ================================== 3a) Specimens C is scapula of small mammal 3b) it is found around the shoulder in animal 3c) it aids the attachment of the muscles and ligaments that provide firm support for the fore limbs 3d) i)their boches are covered with hairs ii)they have two pairs of limbs iii)they are homoiothemic or warm blooded animal in nature iv)they have a well developed brain 3e) DRAWING 8 TO 10CM LONG click the link ================================== 4a) specimen D is tilapia fish specimen E is toad 4bi) D -fresh water E -water or land 4bii) D -fishes E -amphibian 4c) TABULATE SPECIMENS D i)fins present ii)limb absent iii)tail present iv)scales present SPECIMENS E i)fins absent ii)limbs present iii)tail absent iv)scales absent 4e) DRAWING 8 TO 10CM LONG ================================== 5a) TABULATE ECOLOGICAL FACTOR i)amount of rain fall ii)wind speed iii)temperature iv)tubidity v)atmospheric pressure INSTRUMENT USED i)rain guage ii)anenometre iii)thermometer iv)sacchi disc v)barometer 5bi) zooplankton——>cray fish——>tilapia——>king fishers 5bii) i)producer ——> zooplankton ii)tetiary consumer ——> kingfishers ================================== enjoy