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Biology Past Questions

Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.

53 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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Past Questions

53 questions

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Question 21

waec 1988

Which of the following statements is correct of hormones? Hormones are

Asecreted into the blood through ducts

Bsecreted directly into the blood streem

Cinactive chemical substance in the blood stream

Dnon-specific in their mode of action

Esecreted at the site of the needed organ

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Question 22

waec 1988

Co-ordination is achieved in the body of mammals through the action of the

Aendocrine and nervous systems

Bskeletal and nervous systems

Cmuscular and nervous systems

Dcirculatory and nervous systems

Eskeletal, muscular and nervous system

View Explanation & Discuss

Question 23

waec 1988

The pigment in the malphigian layer responsible for skin colouration is known as

Ahaemoglobin

Bhaemocyanin

Cchlorocruorin

Dhaemoerythrin

Emelanin

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Question 24

waec 1988

Which of the following statements on urine production is not correct?

AConcentrated urine is produced under the control of antidiuretic hormone

BThe total volume of urine produced depends on the need for water excretion

Cif there is excess intake of water, dilute urine is expected

Dif there is a shortage of water in the body the volume of the urine produced is decreased

Ein the presence of antidiuretic hormone dilute urine is produced

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Question 25

waec 1988

Deamination is the process during which

Aexcess amino acid is broken down into ammonia and keto acid

Bfats and oil are converted into an emulsion for absorption

Cexcess glucose is converted and store as glycogen in the liver

Dglycogen is reconverted into glucose through the action of glucagon

Eexcess amino acid is converted into proteins

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Question 26

waec 1988

The thoracic cavity is separated from the abdominal cavity by a sheet of muscle called

Apleural membrane

Bintercostal muscles

Cdiaphragm

Dpericardium

Eepiglottis

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Question 27

waec 1988

Which of the following blood components has the greatest affinity for oxygen and carbondioxide?

ABlood plasma

BLeucocytes

CThrombocytes

DErythrocytes

ELymphocytes

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Question 28

waec 1988

The pulmonary artery carries

Adeoxygenated blood from the right ventricles to the lungs

Boxygenated blood from the right ventricle to the lungs

Coxygenated blood from the left ventricles to the ventricles to the right auricle

Ddeoxygenated blood from the left ventricles to the right auricles

Eoxygenated blood from the lings to the right auricles

View Explanation & Discuss

Question 29

waec 1988

THe bicuspid valve is located between the

Aleft auricle and left ventricle

Baorta and left ventricle

Csuperior vena cava and inferior vena cava

Dright auricle and superior vena cava

Eright auricle and right ventricle

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Question 30

waec 1988

Double fertilization is said to occur in flowering pants because?

Atwo embryos are formed

Bone egg is fertilized twice

Ctwo sperms fertilize each egg

Done embryo and endosperm nucleus are formed

Etwo sperms and two pollen grains are involved

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Question 31

waec 1988

The ability of organisms to maintain a constant internal environment is known as

Adiuresis

Bendosmosis

Cplasmolysis

Ddialysis

Ehomeostasis

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Question 32

waec 1988

This stage of mitosis is characterized by the

Amovement of the chromosome to the poles

Barrangement of chromosomes on the equitorial planes

Ccentromeres moving apart along the spindle

Dinteraction of the spindles with the chromosomes

Econdensation of chromosomes and formation of spindles

View Explanation & Discuss

Question 33

waec 1988

what stage mitotic division is represented in the diagram of the cell illustrated above

AProphase

BTelophase

CAnaphase

DMetaphase

EInterphase

View Explanation & Discuss

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