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jamb answer march 12,7am biology
By: Eda Date: March 12, 2018, 2:13 am
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*BIOLOGY 7AM ANSWERS*
BIO
QUESTION 1
In Mucor or Rhizopus carbohydrate is absorbed in the form of
(A) starch
(B) sucrose
(C) glucose
(D) glycogen
ANSWER : 1c
QUESTION 2
One of the following statement is NOT true of Spirogyra
(A) it is a simple multicellular plant
(B) During conjugation, its gametes, which are structurally and
physiologically simllar, fuse to form a zygote
(C) it possesses spiral chioroplast which enables the plant to
photosynthesize
(D) it cells are protected externally by a layer of mucilage
ANSWER : 2a
QUESTION 3
Which of the following spreads malaria in Nigeria?
(A) Anopheles mosquito
(B) Culex mosquito
(C) Aedes mosquito
(D) Tsetse fly
ANSWER : 3a
QUESTION 4
The vacuole of a plant cell is
(A) a large empty space
(B) smaller than that of an animal cell
(C) filled with air
(D) Surrounded by a membrane
ANSWER : 4d
QUESTION 5
Which one of the following animals is NEVER a secondary host of
tapeworm?
(A) Cow
(B) Fish
(C) Pig
(D) Man
ANSWER : 5d
QUESTION 6
Some of the feature of an animal are scales teeth, nares and
backbone. The animal is likely to be a
(A) toad
(B) bird
(C) lizard
(D) rat
ANSWER : 6c
QUESTION 7
Milk can be pasteurized by
(A) the addition of common salt
(B) boiling for one hour
(C) heating to 75OC for 20 minutes
(D) the addition vinegar
ANSWER : 7c
QUESTION 8
Human beings require vitamins in their diet because vitamins
(A) contain cabobydrates and fats
(B) prevent kwashiorkor
(C) stimulate the alimentary cannel
(D) influence many important chemical processes in the body
ANSWER : 8d
QUESTION 9
Which of the following organs produces bile?
(A) Gall bladder
(B) Pancreas
(C) Spleen
(D) Liver
ANSWER : 9d
QUESTION 10
The organ through which food and oxygen are supplied to the
human embryo and which also prevents harmful materials from
reaching the embryo is the
(A) amnion
(B) uterus
(C) placenta
(D) umbilical cord
ANSWER : 10c
QUESTION 11
A true fruit is formed from
(A) a fertilized ovary and other floral parts
(B) a fertilized ovary
(C) a fertilized ovary and calyx
(D) a fertilized ovary and fleshy receptacle
ANSWER : 11b
QUESTION 12
Water is required for seed germination to take place because it
(A) activates the enzymes
(B) softens the testa
(C) liberates energy for growth
(D) permits radicle growth
ANSWER : 12a
QUESTION 13
A fresh kolanut weighing 1g was put into salt solution, After 3
hours, the kolanut weighed 1.2g. this simple experiment
demonstrates that
(A) the salt solution is more concentrated that the cell sap of
the kolanut
(B) the cell sap of the kolanut is more concentrated that the
salt solution
(C) the salt solution has the same concentration as the cell
sap of the kolanut
(D) kolanut cells can multiply in water
ANSWER : 13b
QUESTION 14
The joint between the atlas and axis vertebrae allows for
(A) rotator movements only
(B) up and down or nodding movements only
(C) rotator and nodding movements
(D) no movement at all
ANSWER : 14c
QUESTION 15
Which of the following food substance is digested in the
stomach?
(A) Carbohydrates
(B) Fats and Oils
(C) Fats and Proteins
(D) Proteins
ANSWER : 15c
QUESTION 16
The conversion of excess amino acids into urea occurs in the
(A) Kidney
(B) Pancreas
(C) Villi
(D) Liver
ANSWER : 16d
QUESTION 17
All living organisms
(A) Photosynthesize
(B) respire
(C) move
(D) feed
ANSWER : 17d
QUESTION 18
In testing for glucose the necessary reagent and the condition
under which the reagent reacts best are
(A) Fehling�s reagent, in the cold
(B) Millon�s reagent, boiled
(C) Fehling�s reagent in acid medium, heated
(D) Iodine solution, boiled
ANSWER : 18d
QUESTION 19
Amoeba moves by means of
(A) cilia
(B) flagella
(C) pseudopodia
(D) swimmerets
ANSWER : 19c
QUESTION 20
Root hairs have their origin from
(A) endodermis
(B) pericycle
(C) cortex
(D) epidermis
ANSWER : 20d
QUESTION 21
For pollination and fruit formation, the essential part(s) of
the flower should be the
(A) corolla
(B) ovary
(C) pistil (gynoecium)
(D) ovules
ANSWER : 21c
QUESTION 22
Which one of the following parts of the mammalian body is most
closely associated with the production of urine?e
(A) Malpighian capsule
(B) Urinary bladder
(C) Ureter
(D) Vas deferens
ANSWER : 22a
QUESTION 23
The element nitrogen is utilized in
(A) formation of ATP
(B) formation of glucose
(C) formation of amino acids
(D) photosynthesis
ANSWER : 23c
QUESTION 24
Magnesium is utilized in the formation of
(A) ATP
(B) glucose
(C) amino acids
(D) chlorophyll
ANSWER : 24d
QUESTION 25
A photometer is used to determine the rate at which a shoot
(A) respires
(B) sucks air bubbles
(C) loses weight
(D) transpires
ANSWER : 25d
QUESTION 26
A green plant growing in a compost pit is feeding
(A) holozoically
(B) parasitically
(C) saprophytically
(D) holophytically
ANSWER : 26d
QUESTION 27
Root hairs have their origin from
(A) endodermis
(B) pericycle
(C) cortex
(D) epidermis
ANSWER : 27c
QUESTION 28
In anaerobic respiration, glucose is converted to one of the
following
(A) Carbon dioxide and water
(B) Carbon dioxide only
(C) Carbon dioxide and alcohol
(D) Alcohol and water
ANSWER : 28c
QUESTION 29
During excretion of urea there is also a corresponding
re-absorption of water into the blood. This reabsorption takes
place in the
(A) unriniferous tubules
(B) bowman�s capsule
(C) glomerulus
(D) malpighian capsule
ANSWER : 29a
QUESTION 30
If the bark and phloem tissues of a woody shoot are peeled off
by ringing, the whole plant will eventually die because
(A) water does not reach the leaves
(B) water and salts remain below the ringed portion
(C) there is withdrawal of water from the root by soil
(D) manufactured food does not reach the roots
ANSWER : 30d
QUESTION 31
The filaments of Spirogyra were put into equal volumes of sugar
solution X and Y. After 5 minutes, filaments from solution X had
their cell contents rounded up while those from Y were
unaffected. The experiment shows that
(A) solution X was stronger than Y
(B) solution Y was stronger that X
(C) Spirogyra used up the sugar in solution X
(D) solution X is good for stimulating sexual reproduction in
Spirogyra
ANSWER : 31a
QUESTION 32
Which part of the human brain is concerned with reflexes
controlling the rate of heart beat and breathing?
(A) Medulla
(B) Cerebrum
(C) Cerebellum
(D) Pineal body
ANSWER : 32a
QUESTION 33
Which of the following hormones is produced during fright or
when agitated?
(A) Insulin
(B) Adrenalin
(C) Thyroxine
(D) Pituitrin
ANSWER : 33b
QUESTION 34
The following are connected with the movement of reflex action 1
Central nervous system 2 Muscle 3 Skin 4 Sensory nerve 5 Motor
nerves. Which of the following sequence indicates a correct
path?
(A) 1-2-3-4-5
(B) 2-1-4-5-3
(C) 3-4-1-2-5
(D) 3-4-1-5-2
ANSWER : 34d
QUESTION 35
When the ciliary muscle of the eye contracts, the eye lens
(A) bulges
(B) contracts
(C) rotates
(D) flattens
ANSWER : 35b
QUESTION 36
Biconcave lenses are used in the correction of an eye defect
called
(A) myopia
(B) colour blindness
(C) old age
(D) hypermetropia
ANSWER : 36a
QUESTION 37
The centre which controls respiratory activities in the
mammalian brain is the
(A) celebrum
(B) olfactory lobes
(C) pituitary organ
(D) medulla
ANSWER : 37d
QUESTION 38
A student trying to find out the order in which organisms appear
on a cleared plot is studying one of the following
(A) Ecosystem
(B) food chain
(C) food web
(D) succession
ANSWER : 38d
QUESTION 39
An organism X lives entirely on the waste products in another
organism Y. in this association X is a
(A) symbiont
(B) commensal
(C) saprophute
(D) parasite
ANSWER : 39b
QUESTION 40
The tips of some rice seedlings were cut off while some were
left intact. Both were covered with a container which had only
one small hole to allow light through. After twenty-four hour if
was observed that
(A) the cut tips bent away from light
(B) the cut tips bent towards source of light
(C) the intact tips bent away from the light
(D) the intact tips bent towards light
ANSWER : 40d
QUESTION 41
If three 30 cm lengths of glass tubing are tightly packed with
clay, sand and loamy soils respectively and than stood in a
beaker of water for one week, the level of water will be
(A) lowest in the tube with clay
(B) the same in all the tubes
(C) lowest in the tube with loamy soil
(D) lowest in the tube with sandy soil
ANSWER : 41d
QUESTION 42
If a baby is a female, her mother�s ovum must have been
fertilized by a sperm carrying the chromosome
(A) X
(B) XY
(C) XX
(D) Y
ANSWER : 42a
QUESTION 43
Leguminous plants, e.g mucana, ate usually planted in cultivated
farmlands because they
(A) enrich the soil with phosphates
(B) provide animals with food
(C) enrich the soil with organic nitrogen
(D) protect the soil from being over-heated
ANSWER : 43c
QUESTION 44
During thunderstorms the energy of lightning discharge causes
(A) oxygen and nitrogen to combine
(B) more carbon dioxide to be formed
(C) nitrites to be converted to nitrates
(D) nitrates to be converted to nitrogen
ANSWER : 44a
QUESTION 45
A few grams of dried soil were first heated until red hot and
then further heated until no more smoke was released. This
experiment was to determine the
(A) amount of water in soil
(B) percentage of water in soil
(C) presence of humus in soil
(D) resistance of laterites to heat
ANSWER : 45c
QUESTION 46
Oxygen from the atmosphere reaches the mammalian bloodstream
through one of the paths indicated below. Indicate the correct
path. a=mouth, b=trachea, c=bronchiole, d=nostril, e=bronchus,
f=alveoli
(A) a > b > e > f > d
(B) b > d > f > e > c
(C) d > b > e > c > f
(D) b > a > f > e > c
ANSWER : 46c
QUESTION 47
Below are some group�s diseases. Which group of diseases
is caused by bacteria?
(A) Tuberculosis, smallpox
(B) Gonorrhea, measles
(C) Tuberculosis. Polio
(D) syphilis, gonorrhea
ANSWER : 47d
QUESTION 48
A mosquito which produces eggs with float, and whose larvae lie
horizontal to the water surface, also rests at an angle on a
vertical surface. This type of mosquito is
(A) Aeses
(B) Anopheles
(C) Culex
(D) Tiger mosquito
ANSWER : 48b
QUESTION 49
The amount of water loss from a leaf can be detected using
(A) lime-water
(B) red litmus paper
(C) blue litmus paper
(D) blue cobalt chloride paper
ANSWER : 49d
QUESTION 50
In animals, cilia, flagella, pseudopodia, and chaetae, can be
used for
(A) reproduction
(B) fighting enemies
(C) attachment to plants
(D) locomotion
ANSWER : 50d
QUESTION 1
In Mucor or Rhizopus carbohydrate is absorbed in the form of
(A) starch
(B) sucrose
(C) glucose
(D) glycogen
ANSWER : 1c
QUESTION 2
One of the following statement is NOT true of Spirogyra
(A) it is a simple multicellular plant
(B) During conjugation, its gametes, which are structurally and
physiologically simllar, fuse to form a zygote
(C) it possesses spiral chioroplast which enables the plant to
photosynthesize
(D) it cells are protected externally by a layer of mucilage
ANSWER : 2a
QUESTION 3
Which of the following spreads malaria in Nigeria?
(A) Anopheles mosquito
(B) Culex mosquito
(C) Aedes mosquito
(D) Tsetse fly
ANSWER : 3a
QUESTION 4
The vacuole of a plant cell is
(A) a large empty space
(B) smaller than that of an animal cell
(C) filled with air
(D) Surrounded by a membrane
ANSWER : 4d
QUESTION 5
Which one of the following animals is NEVER a secondary host of
tapeworm?
(A) Cow
(B) Fish
(C) Pig
(D) Man
ANSWER : 5d
QUESTION 6
Some of the feature of an animal are scales teeth, nares and
backbone. The animal is likely to be a
(A) toad
(B) bird
(C) lizard
(D) rat
ANSWER : 6c
QUESTION 7
Milk can be pasteurized by
(A) the addition of common salt
(B) boiling for one hour
(C) heating to 75OC for 20 minutes
(D) the addition vinegar
ANSWER : 7c
QUESTION 8
Human beings require vitamins in their diet because vitamins
(A) contain cabobydrates and fats
(B) prevent kwashiorkor
(C) stimulate the alimentary cannel
(D) influence many important chemical processes in the body
ANSWER : 8d
QUESTION 9
Which of the following organs produces bile?
(A) Gall bladderdu
(B) Pancreas
(C) Spleen
(D) Liver
ANSWER : 9d
QUESTION 10
The organ through which food and oxygen are supplied to the
human embryo and which also prevents harmful materials from
reaching the embryo is the
(A) amnion
(B) uterus
(C) placenta
(D) umbilical cord
ANSWER : 10c
QUESTION 11
A true fruit is formed from
(A) a fertilized ovary and other floral parts
(B) a fertilized ovary
(C) a fertilized ovary and calyx
(D) a fertilized ovary and fleshy receptacle
ANSWER : 11b
QUESTION 12
Water is required for seed germination to take place because it
(A) activates the enzymes
(B) softens the testa
(C) liberates energy for growth
(D) permits radicle growth
ANSWER : 12a
QUESTION 13
A fresh kolanut weighing 1g was put into salt solution, After 3
hours, the kolanut weighed 1.2g. this simple experiment
demonstrates that
(A) the salt solution is more concentrated that the cell sap of
the kolanut
(B) the cell sap of the kolanut is more concentrated that the
salt solution
(C) the salt solution has the same concentration as the cell
sap of the kolanut
(D) kolanut cells can multiply in water
ANSWER : 13b
QUESTION 14
The joint between the atlas and axis vertebrae allows for
(A) rotator movements only
(B) up and down or nodding movements only
(C) rotator and nodding movements
(D) no movement at all
ANSWER : 14c
QUESTION 15
Which of the following food substance is digested in the
stomach?
(A) Carbohydrates
(B) Fats and Oils
(C) Fats and Proteins
(D) Proteins
ANSWER : 15c
QUESTION 16
The conversion of excess amino acids into urea occurs in the
(A) Kidney
(B) Pancreas
(C) Villi
(D) Liver
ANSWER : 16d
QUESTION 17
All living organisms
(A) Photosynthesize
(B) respire
(C) move
(D) feed
ANSWER : 17d
QUESTION 18
In testing for glucose the necessary reagent and the condition
under which the reagent reacts best are
(A) Fehling�s reagent, in the cold
(B) Millon�s reagent, boiled
(C) Fehling�s reagent in acid medium, heated
(D) Iodine solution, boiled
ANSWER : 18d
QUESTION 19
Amoeba moves by means of
(A) cilia
(B) flagella
(C) pseudopodia
(D) swimmerets
ANSWER : 19c
QUESTION 20
Root hairs have their origin from
(A) endodermis
(B) pericycle
(C) cortex
(D) epidermis
ANSWER : 20d
QUESTION 21
For pollination and fruit formation, the essential part(s) of
the flower should be the
(A) corolla
(B) ovary
(C) pistil (gynoecium)
(D) ovules
ANSWER : 21c
QUESTION 22
Which one of the following parts of the mammalian body is most
closely associated with the production of urine?
(A) Malpighian capsule
(B) Urinary bladder
(C) Ureter
(D) Vas deferens
ANSWER : 22a
QUESTION 23
The element nitrogen is utilized in
(A) formation of ATP
(B) formation of glucose
(C) formation of amino acids
(D) photosynthesis
ANSWER : 23c
QUESTION 24
Magnesium is utilized in the formation of
(A) ATP
(B) glucose
(C) amino acids
(D) chlorophyll
ANSWER : 24d
QUESTION 25
A photometer is used to determine the rate at which a shoot
(A) respires
(B) sucks air bubbles
(C) loses weight
(D) transpires
ANSWER : 25d
QUESTION 26
A green plant growing in a compost pit is feeding
(A) holozoically
(B) parasitically
(C) saprophytically
(D) holophytically
ANSWER : 26d
QUESTION 27
Root hairs have their origin from
(A) endodermis
(B) pericycle
(C) cortex
(D) epidermis
ANSWER : 27c
QUESTION 28
In anaerobic respiration, glucose is converted to one of the
following
(A) Carbon dioxide and water
(B) Carbon dioxide only
(C) Carbon dioxide and alcohol
(D) Alcohol and water
ANSWER : 28c
QUESTION 29
During excretion of urea there is also a corresponding
re-absorption of water into the blood. This reabsorption takes
place in the
(A) unriniferous tubules
(B) bowman�s capsule
(C) glomerulus
(D) malpighian capsule
ANSWER : 29a
QUESTION 30
If the bark and phloem tissues of a woody shoot are peeled off
by ringing, the whole plant will eventually die because
(A) water does not reach the leaves
(B) water and salts remain below the ringed portion
(C) there is withdrawal of water from the root by soil
(D) manufactured food does not reach the roots
ANSWER : 30d
QUESTION 31
The filaments of Spirogyra were put into equal volumes of sugar
solution X and Y. After 5 minutes, filaments from solution X had
their cell contents rounded up while those from Y were
unaffected. The experiment shows that
(A) solution X was stronger than Y
(B) solution Y was stronger that X
(C) Spirogyra used up the sugar in solution X
(D) solution X is good for stimulating sexual reproduction in
Spirogyra
ANSWER : 31a
QUESTION 32
Which part of the human brain is concerned with reflexes
controlling the rate of heart beat and breathing?
(A) Medulla
(B) Cerebrum
(C) Cerebellum
(D) Pineal body
ANSWER : 32a
QUESTION 33
Which of the following hormones is produced during fright or
when agitated?
(A) Insulin
(B) Adrenalin
(C) Thyroxine
(D) Pituitrin
ANSWER : 33b
QUESTION 34
The following are connected with the movement of reflex action 1
Central nervous system 2 Muscle 3 Skin 4 Sensory nerve 5 Motor
nerves. Which of the following sequence indicates a correct
path?
(A) 1-2-3-4-5
(B) 2-1-4-5-3
(C) 3-4-1-2-5
(D) 3-4-1-5-2
ANSWER : 34d
QUESTION 35
When the ciliary muscle of the eye contracts, the eye lens
(A) bulges
(B) contracts
(C) rotates
(D) flattens
ANSWER : 35b
QUESTION 36
Biconcave lenses are used in the correction of an eye defect
called
(A) myopia
(B) colour blindness
(C) old age
(D) hypermetropia
ANSWER : 36a
QUESTION 37
The centre which controls respiratory activities in the
mammalian brain is the
(A) celebrum
(B) olfactory lobes
(C) pituitary organ
(D) medulla
ANSWER : 37d
QUESTION 38
A student trying to find out the order in which organisms appear
on a cleared plot is studying one of the following
(A) Ecosystem
(B) food chain
(C) food web
(D) succession
ANSWER : 38d
QUESTION 39
An organism X lives entirely on the waste products in another
organism Y. in this association X is a
(A) symbiont
(B) commensal
(C) saprophute
(D) parasite
ANSWER : 39b
QUESTION 40
The tips of some rice seedlings were cut off while some were
left intact. Both were covered with a container which had only
one small hole to allow light through. After twenty-four hour if
was observed that
(A) the cut tips bent away from light
(B) the cut tips bent towards source of light
(C) the intact tips bent away from the light
(D) the intact tips bent towards light
ANSWER : 40d
QUESTION 41
If three 30 cm lengths of glass tubing are tightly packed with
clay, sand and loamy soils respectively and than stood in a
beaker of water for one week, the level of water will be
(A) lowest in the tube with clay
(B) the same in all the tubes
(C) lowest in the tube with loamy soil
(D) lowest in the tube with sandy soil
ANSWER : 41d
QUESTION 42
If a baby is a female, her mother�s ovum must have been
fertilized by a sperm carrying the chromosome
(A) X
(B) XY
(C) XX
(D) Y
ANSWER : 42a
QUESTION 43
Leguminous plants, e.g mucana, ate usually planted in cultivated
farmlands because they
(A) enrich the soil with phosphates
(B) provide animals with food
(C) enrich the soil with organic nitrogen
(D) protect the soil from being over-heated
ANSWER : 43c
QUESTION 44
During thunderstorms the energy of lightning discharge causes
(A) oxygen and nitrogen to combine
(B) more carbon dioxide to be formed
(C) nitrites to be converted to nitrates
(D) nitrates to be converted to nitrogen
ANSWER : 44a
QUESTION 45
A few grams of dried soil were first heated until red hot and
then further heated until no more smoke was released. This
experiment was to determine the
(A) amount of water in soil
(B) percentage of water in soil
(C) presence of humus in soil
(D) resistance of laterites to heat
ANSWER : 45c
QUESTION 46
Oxygen from the atmosphere reaches the mammalian bloodstream
through one of the paths indicated below. Indicate the correct
path. a=mouth, b=trachea, c=bronchiole, d=nostril, e=bronchus,
f=alveoli
(A) a > b > e > f > d
(B) b > d > f > e > c
(C) d > b > e > c > f
(D) b > a > f > e > c
ANSWER : 46c
QUESTION 47
Below are some group�s diseases. Which group of diseases
is caused by bacteria?
(A) Tuberculosis, smallpox
(B) Gonorrhea, measles
(C) Tuberculosis. Polio
(D) syphilis, gonorrhea
ANSWER : 47d
QUESTION 48
A mosquito which produces eggs with float, and whose larvae lie
horizontal to the water surface, also rests at an angle on a
vertical surface. This type of mosquito is
(A) Aeses
(B) Anopheles
(C) Culex
(D) Tiger mosquito
ANSWER : 48b
QUESTION 49
The amount of water loss from a leaf can be detected using
(A) lime-water
(B) red litmus paper
(C) blue litmus paper
(D) blue cobalt chloride paper
ANSWER : 49d
QUESTION 50
In animals, cilia, flagella, pseudopodia, and chaetae, can be
used for
(A) reproduction
(B) fighting enemies
(C) attachment to plants
(D) locomotion
ANSWER : 50d
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