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Biology Past Questions

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Past Questions

50 questions

Question 1 of 20 50 total questions

Question 11

jamb 1980

The center which controls respiratory activities the mammalian brain is the

Acerebrum

Bolfactory lobe

Cpituitary organ

Dcerebellum

Emedulla

View Explanation & Discuss

Question 12

jamb 1980

Biconcave lenses are used in the correction of an eye defect called?

Amyopia

Bcolour blindnes

Cold age

Dhypermetropia

Eweakening of ciliary muscles

View Explanation & Discuss

Question 13

jamb 1980

The following are connected with the movement of a reflex action (1) Central nervous (2) Muscles (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path?

A1-2-3-4-5

B2-1-4-5-3

C3-4-1-2-5

D4-1-5-2-3

E3-4-1-5-2

View Explanation & Discuss

Question 14

jamb 1980

Which of the following hormones is produced during fright or when agitated?

AInsulin

BAdrenalin

CThyroxine

DPituitrin

EProgesterone

View Explanation & Discuss

Question 15

jamb 1980

which part of the human brain is concerned with reflexes controlling the rate of heart beat and breathing?

AMedulla

BCerebrum

CCerebellum

DPineal body

EOlfactory lobe

View Explanation & Discuss

Question 16

jamb 1980

The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that

Asolution X was stronger than Y

Bsolution Y was stronger than X

CSpirogyra used up the sugar in solution X

Dsolution X is good for stimulating sexual reproduction in Spirogyra

Esolution Y was less contaminated than X

View Explanation & Discuss

Question 17

jamb 1980

If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because?

Awater does not reach the leaves

Bwater and salts remained below the ring portion

Cthere is a withdrawal of water from the root by soil

Dmanufactured food does not reach the roots

Ethe roots store too much water

View Explanation & Discuss

Question 18

jamb 1980

During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the

Auriniferous tubules

BBowman's capsule

Cglomerulus

Dmalpighian capsule

Erenal artery

View Explanation & Discuss

Question 19

jamb 1980

In anaerobic respiration, glucose is converted to one of the following

ACarbon dioxide and water

BCarbon dioxide only

CCarbon dioxide and alcohol

DAlcohol and water

Ewater and acetic acid

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Question 20

jamb 1980

The part of the cell solely responsible for respiration is the

Anucleus

Bnucleolus

Cmitochondria

Dgolgi apparatus

Eendoplasmic reticulum

View Explanation & Discuss

Question 21

jamb 1980

A green plant growing in a compost pit is feeding?

Aholozoically

Bparasitically

Csaprophytically

Dholophytically

Ein none of the above ways

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Question 22

jamb 1980

A potometer is used to determine the rate at which a shoot

Arespires

Bsucks air bubbles

Closes weight

Dabsorbs water

Etranspires

View Explanation & Discuss

Question 23

jamb 1980

Which one of the following parts of the mammalian body is most closely associated with the production of urine?

AMalpighian capsule

BUrinary bladder

CUreter

DVas deferens

EUrethra

View Explanation & Discuss

Question 24

jamb 1980

For pollination and fruit formation, the essential part(s) of the flower should be the

Acorolla

Bovary

Cpistil (gynoecium)

Dovules

Ereceptacle

View Explanation & Discuss

Question 25

jamb 1980

The conversion of excess amino acids into urea occurs in the

AKidney

Bpancreas

Cvilli

Dliver

Espleen

View Explanation & Discuss

Question 26

jamb 1980

Which of the following food substances is digested in the stomach?

ACarbohydrate

BFats and oil

CFats and proteins

DProteins

ECarbohydrates and fats

View Explanation & Discuss

Question 27

jamb 1980

The joint between the atlas and axis vertebrae allows for

Arotatory movement only

Bup and down or nodding movements only

Crotatory and nodding movements

Dno movement at all

Eslight movement

View Explanation & Discuss

Question 28

jamb 1980

A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that

Athe salt solution is more concentrated that the cell sap of the kolanut

Bthe cell sap of the kolanut is more concentrated than the salt solution

Cthe salt solution has the same concentration as the cell sap of the kolanut

Dkolanut cell can multiply in water

Ethe kolanut lost some water molecules to the salt solution

View Explanation & Discuss

Question 29

jamb 1980

Water is required for seed germination to take place because it

Aactivates the enzymes

Bsoftens the testa

Cliberates energy for growth

Dpermits radicle growth

Eallow oxygen to diffuse into the seed

View Explanation & Discuss

Question 30

jamb 1980

A true fruit is formed from

Aa fertilized ovary and other floral parts

Ba fertilized ovary

Ca fertilized ovary and calyx

Da fertilized ovary and fleshy receptacle

Ean unfertilized ovary and other floral part

View Explanation & Discuss

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