Biology Past Questions v8 For JAMB/WAEC/NECO Students; These Biology past questions are for students who are sitting for the following examinations:

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#1. Which of the labelled parts will develop into a new maize plant?

A) 2

A) 2

B) 3

B) 3

C) 4

C) 4

D) 5

D) 5

#2. The structure labelled 1 is the

A) plumule

A) plumule

B) radicle

B) radicle

C) cell membrane

C) cell membrane

D) seed coat

D) seed coat

#3. The main function of the structure labelled 2 is to

A) protect the inner parts of the seed

A) protect the inner parts of the seed

B) nourish the emebrane

B) nourish the emebrane

C) keep the inner parts moist

C) keep the inner parts moist

D) maintain the shape if the seed

D) maintain the shape if the seed

#4. In community, bacteria and fungi are referred to as

A) producers

A) producers

B) decomposers

B) decomposers

C) scavengers

C) scavengers

D) consumers

D) consumers

#5. The swollen shoot disease of cocoa tree is caused by a Options

A) virus

A) virus

B) fungus

B) fungus

C) bacterium

C) bacterium

D) protozoan

D) protozoan

#6. A larger percentage of tropical soils tends to be acidic because they

A) contain large quantities of potash

A) contain large quantities of potash

B) contain large quantities of lime

B) contain large quantities of lime

C) lose a high proportion of their organic matter to running water

C) lose a high proportion of their organic matter to running water

D) lose lime and potash from the top soil through rain action

D) lose lime and potash from the top soil through rain action

#7. The following are methods of soil conservation EXCEPT

A) contour terracing

A) contour terracing

B) strip cropping

B) strip cropping

C) contour ploughing

C) contour ploughing

D) mixed grazing

D) mixed grazing

#8. Sample of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool, if these tubes are suspended in a trough of water, water will rise highest after a few hours in

A) sand

A) sand

B) loamy

B) loamy

C) clay

C) clay

D) humus

D) humus

#9. An instrument that can be used to demonstrate phototropism and geotropism in plants is the

A) auxanometer

A) auxanometer

B) potometer

B) potometer

C) klinostat

C) klinostat

D) photometer

D) photometer

#10. In an ecosystem, animals which feed directly on plants are called

A) secondary consumers

A) secondary consumers

B) primary consumers

B) primary consumers

C) producers

C) producers

D) predators

D) predators

#11. In an agricultural ecosystem, the biotic component consists of

A) crop, pest and beneficial insects

A) crop, pest and beneficial insects

B) crops, temperature and humidity

B) crops, temperature and humidity

C) pests, beneficial insects and water

C) pests, beneficial insects and water

D) crops, water and soil

D) crops, water and soil

#12. Which of these disease CANNOT be prevented by immunization?

A) Poliomyelitis

A) Poliomyelitis

B) Tuberculosis

B) Tuberculosis

C) Cholera

C) Cholera

D) onchocerciasis

D) onchocerciasis

#13. Which of the following ecological factors are common to both terrestrial and aquatic habitats?

A) Rainfall, temperature and light

A) Rainfall, temperature and light

B) Salinity, rainfall and altitude

B) Salinity, rainfall and altitude

C) Tides, wind, rainfall and altitude

C) Tides, wind, rainfall and altitude

D) pH, salinity, rainfall and humidity.

D) pH, salinity, rainfall and humidity.

#14. Nastic movement is

A) response to light stimulus

A) response to light stimulus

B) non-directional

B) non-directional

C) directional

C) directional

D) response to internal stimulus

D) response to internal stimulus

#15. Gestation in mammals is the period

A) required for growth after birth

A) required for growth after birth

B) between the formation of the foetus and birth

B) between the formation of the foetus and birth

C) of development from zygote to birth

C) of development from zygote to birth

D) before the formation of the zygote

D) before the formation of the zygote

#16. If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal?

A) Three

A) Three

B) Two

B) Two

C) One

C) One

D) None

D) None

#17. The hormones which regulates the amount of glucose in the blood is called

A) adrenalin

A) adrenalin

B) auxin

B) auxin

C) insulin

C) insulin

D) thyroxine

D) thyroxine

#18. The equation that can be used to summarize the process of anaerobic breakdown of sugar is

A) C2H12O6 2C2H5OH + 2CO2

A) C2H12O6 2C2H5OH + 2CO2

B) 6Co2 + 6H2O C6H12O6 + 6O2

B) 6Co2 + 6H2O C6H12O6 + 6O2

C) C6H12O6 + 6O2 6CO2 + 6H2O + enegy

C) C6H12O6 + 6O2 6CO2 + 6H2O + enegy

D) C6H12O6 2C2H5OH + 2CO2 + energy

D) C6H12O6 2C2H5OH + 2CO2 + energy

#19. If a person is bitten by a snake on the leg, it is advisable for him to

A) keep moving so that the venom will ooze out with bleeding

A) keep moving so that the venom will ooze out with bleeding

B) Wash the wound with water containing antiseptic

B) Wash the wound with water containing antiseptic

C) bandage the wound so that germs do not get in through it

C) bandage the wound so that germs do not get in through it

D) Keep still and apply a tourniquet above the wound

D) Keep still and apply a tourniquet above the wound

#20. Deamination occurs in the

A) kidney

A) kidney

B) pancreas

B) pancreas

C) spleen

C) spleen

D) liver

D) liver

#21. In the mammalian skin, melanin and keratin are contained in the

A) sebaceous gland

A) sebaceous gland

B) sweat gland

B) sweat gland

C) subcubaneous layer

C) subcubaneous layer

D) malpighian layer

D) malpighian layer

#22. Two main distinguishing features of the cervical vertebra are the presence of

A) short neural spine and vertebraterial canal

A) short neural spine and vertebraterial canal

B) prozygapophysis and cervical ribs

B) prozygapophysis and cervical ribs

C) large centrum and cervical ribs

C) large centrum and cervical ribs

D) vertebraterial canal and large centrum

D) vertebraterial canal and large centrum

#23. Blood circulation in a mammalian is said to be double because

A) it passes twice through the heart in a complete circuit

A) it passes twice through the heart in a complete circuit

B) it moves in both arteries and veins

B) it moves in both arteries and veins

C) it circulates in both the heart and other organs

C) it circulates in both the heart and other organs

D) the heart contain auricles and ventricles

D) the heart contain auricles and ventricles

#24. Which is the correct order of water loss from the leaf? 1 Mesophyll 2 Veins 3 Substomatals cavity 4 Stomata

A) 3 → 2 → 1 → 4

A) 3 → 2 → 1 → 4

B) 2 → 3 → 1 → 4

B) 2 → 3 → 1 → 4

C) 2 → 1 → 3 → 4

C) 2 → 1 → 3 → 4

D) 1 → 2 → 3 → 4

D) 1 → 2 → 3 → 4

#25. The aperture between the left auricle and the left ventricle is guarded by the

A) auricles valve

A) auricles valve

B) tricupid valve

B) tricupid valve

C) ventricles valve

C) ventricles valve

D) bicuspid valve

D) bicuspid valve

#26. A major limitation in the use of the potometer for measuring the rate of transpiration is that

A) it is made of breakable glass materials

A) it is made of breakable glass materials

B) it measures the rate of water intake

B) it measures the rate of water intake

C) it measure the rate of water loss throuh the stern only

C) it measure the rate of water loss throuh the stern only

D) the movement of the air buble in the potometer cannot be timed accurately

D) the movement of the air buble in the potometer cannot be timed accurately

#27. Which of the following statement is NOT correct with respect to inhalation in mammals?

A) intercostal muscles contract

A) intercostal muscles contract

B) diaphragm is raised

B) diaphragm is raised

C) ribs are raised

C) ribs are raised

D) Pressure of the thoracic cavity decreases

D) Pressure of the thoracic cavity decreases

#28. The severe deficiency of vitamin C leads to

A) Kwashiokor

A) Kwashiokor

B) beriberi

B) beriberi

C) pellagra

C) pellagra

D) scurvy

D) scurvy

#29. In addition to the high calories derived from fats and oils, they are

A) used in producing new cells

A) used in producing new cells

B) necessary for enzyme formation

B) necessary for enzyme formation

C) used as insulators for cold

C) used as insulators for cold

D) required for growth

D) required for growth

#30. The extract from food substance reacting with sodium hydroxide and copper sulphate solutions will produce violet to purple coloration if

A) fats are presents

A) fats are presents

B) carbohydrate is present

B) carbohydrate is present

C) protein is present

C) protein is present

D) reducing sugar is presents

D) reducing sugar is presents

#31. The three important organs that are situated close to the stomach are

A) Kidney, liver and gall bladder

A) Kidney, liver and gall bladder

B) pancreas, liver and kidney

B) pancreas, liver and kidney

C) liver, kidney and spleen

C) liver, kidney and spleen

D) gall bladder, pancreas and spleen

D) gall bladder, pancreas and spleen

#32. Evidence that a tooth is a living part of the mammalian can be found within the

A) gum

A) gum

B) pulp cavity

B) pulp cavity

C) cement

C) cement

D) enarmel

D) enarmel

#33. The stem differs from the root in having the xylem and phloem strands

A) on the same radii

A) on the same radii

B) scattered

B) scattered

C) on alternate radii

C) on alternate radii

D) towards the pith

D) towards the pith

#34. Oxygen liberated during photosynthesis has been demonstrated to come from

A) carbondioxide

A) carbondioxide

B) air

B) air

C) water

C) water

D) chlorophyll

D) chlorophyll

#35. Which of these is a trace element?

A) Iron

A) Iron

B) Copper

B) Copper

C) Calcium

C) Calcium

D) Sulphur

D) Sulphur

#36. The main organic substances found in the human body are

A) carbohydrates, proteins and salts

A) carbohydrates, proteins and salts

B) salts, fats and proteins

B) salts, fats and proteins

C) fat, carbohydrates and protein

C) fat, carbohydrates and protein

D) salts, fats and carbohydrates

D) salts, fats and carbohydrates

#37. Which of the following elements is essential for the formation of haemoglobin?

A) Sodium

A) Sodium

B) Potassium

B) Potassium

C) Calcium

C) Calcium

D) Iron

D) Iron

#38. Incomplete metamorphosis occurs in the

A) butterfly

A) butterfly

B) grasshopper

B) grasshopper

C) mosquito

C) mosquito

D) housefly

D) housefly

#39. Fishes are cold blooded because their body temperature is

A) constantly low

A) constantly low

B) constantly high

B) constantly high

C) dependent on that of their surroundings

C) dependent on that of their surroundings

D) regulated at will

D) regulated at will

#40. When the original king and queen of termites die, they are replaced by

A) the king and queen of another colony

A) the king and queen of another colony

B) some adult reproductives from the same colony

B) some adult reproductives from the same colony

C) some adult workers which are specially fed breed

C) some adult workers which are specially fed breed

D) developing nymphs nurtured as secondary reproductives

D) developing nymphs nurtured as secondary reproductives

#41. The male cockroach differs from the female by having

A) mandibles

A) mandibles

B) a pair of style

B) a pair of style

C) spiracles

C) spiracles

D) a pair of cerci

D) a pair of cerci

#42. The fins making up the limbs of the bony fish are

A) caudal and ventral

A) caudal and ventral

B) ventra and pelvic

B) ventra and pelvic

C) pelvic and pectoral

C) pelvic and pectoral

D) pectoral and dorsal

D) pectoral and dorsal

#43. Which of these animals is radially symmetrical?

A) squid

A) squid

B) Hydra

B) Hydra

C) Snail

C) Snail

D) Cockroach

D) Cockroach

#44. Which of the following has cones?

A) Angiosperms

A) Angiosperms

B) Gymnosperms

B) Gymnosperms

C) Pteridophyte

C) Pteridophyte

D) Bryophyte

D) Bryophyte

#45. For effective functioning of a bird's quill feather, hooks fit on the ridge of the

A) Vane

A) Vane

B) rachis

B) rachis

C) barbules

C) barbules

D) barbs

D) barbs

#46. Which of the following is NOT true of spirogyra?

A) Reproduces by conjugation

A) Reproduces by conjugation

B) Reproduces by fragmentation

B) Reproduces by fragmentation

C) Consist of branched filaments

C) Consist of branched filaments

D) Consist of unbranched filaments

D) Consist of unbranched filaments

#47. Which of the following lacks chaetae, tentacles and antennae?

A) Snail

A) Snail

B) Crab

B) Crab

C) Millipede

C) Millipede

D) Earthworm

D) Earthworm

#48. Viruses are regarded as non-living because they

A) can niether reproduce asexually nor sexually

A) can niether reproduce asexually nor sexually

B) cannot survive in their respective enviroments

B) cannot survive in their respective enviroments

C) do not possess characteristics that can be transmitted from one generation to the next

C) do not possess characteristics that can be transmitted from one generation to the next

D) can neither respire nor excrete

D) can neither respire nor excrete

#49. Which of the following pairs are fully adapted to terrestrial life?

A) Ferns and algae

A) Ferns and algae

B) Ferns and mosses

B) Ferns and mosses

C) Bryophytes and flowering plants

C) Bryophytes and flowering plants

D) Flowering plants and conifers

D) Flowering plants and conifers

Finish

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