Nabteb 2017 Biology Practical Answers – May/June Expo

NABTEB (BIOLOGY PRACTICAL) ANSWER

1i)

i)carbon(iv)oxide

ii)chlorophyll

iii)sunlight

iv)water and mineral salts

1ii)

i)protection: skin protects the body against entrance by microtes etc

ii)excretion: skin excretes excess water mineral salts and some nitrogenous wastes through the sweat glands as sweat

1iii)

i)transport of oxygen

ii)temperature regulation

1iv)

i)presence of chlorophyll for photosynthesis

ii)presense of cellular cell wall

1v)

i)it promote measures for the control of the world’s major disease’s through vaccuiation programmes and use of aritibioties

ii)it helps to set up international quararrayive regulation

1vi)

i)sieria-leone

ii)nigeria

1vii)

-monocotyledonous-

i)they store food in the endo sperm

ii)posses parallel veriation

-dicotyledonous-

i)they store food in the cotyledon

ii)posses not veriation

1viii)

i)protein 15%

ii)fats and oil 15%

iii)vitamins,minerals and water 10%

iv)carbonhydrate 60%

1ix)

i)canning

ii)suning

iii)smoking

iv)dehydration

1x)

i)soil

ii)forestry

iii)wild life

iv)water

1xi)

i)water ferns

1xii)

i)they manufacture food for plant

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ii)they help in interchange of gases in plant

1xiii)

i)lungs

ii)gills

iii)tracheal

iv)skin

1xiv)

i)to help attract pollinators to a plant and in fertilization so that the plant creates seed

ii)they mediate the joining of the sperm contain within pollen to the ovules contained in the ovary

1xv)

i)retina

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2ai)

A-tilapia fish

B-adult toad

C-cockroach

2aii)

A-pisces

B-Amphibian

C-insecta

2b)

A-source of food

B-source of protein

2c)

Make a drawing of the side view of tilapia fish and lebel fully (your drawing should be between 6-8cm long)

CLICK HERE FOR THE DIAGRAM

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3ai)

D- grasshopper

E- groundnut seed

3aii)

D-it destroys crops

E-it is a source of protein, fat and oil

3bi)

A- aquatic habitat

D- terrestrial habibat

3bii)

i)presence of lings for flight

ii)presence of a pair of Artemis for locomotion

iii)presence of a pair of legs for movement

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3c)

specimen C – cockroach

i)Dark or brown in colour

ii)it is bigger in size

ii)it arterma is longer

secimenp D- grasshopper

i)green in colour

ii)it is smaller in size

iii)it anterma is shorter

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4ai)

E-Groundnut seed

F-cowpea seed

4aii)

i)melon

ii)mango

4bi)

i)epigeal germination

ii)the specimen are leguminous plants,they contribute to the soil fertility by nitrogen fixation mechanism

4ci)

i)weavil

4cii)

i)fat and oil

ii)protein

4ciii)

i)by sunning

ii)by canning of bitting

iii)by dehydration

iv)by application pasticides

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5ai)

i)body division is three head thorax and abdomen

ii)presence of a pair antenna

iii)presence of 3 pair of walking legs

iv)presence of lungs

5aii)

i)exoskeleton

5b)

dorsal view of specimen D- Grasshopper

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