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Biology Past Questions and Answers

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Waec Biology Questions

Question 1796:

Double fertilization is said to occur in flowering pants because

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A Two embryos are formed
B One egg is fertilized twice
C Two sperms fertilize each egg
D One embryo and endosperm nucleus are formed
E Two sperms and two pollen grains are involved

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Question 1797:

THe bicuspid valve is located between the

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A Left auricle and left ventricle
B Aorta and left ventricle
C Superior vena cava and inferior vena cava
D Right auricle and superior vena cava
E Right auricle and right ventricle

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Question 1798:

The pulmonary artery carries

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A Deoxygenated blood from the right ventricles to the lungs
B Oxygenated blood from the right ventricle to the lungs
C Oxygenated blood from the left ventricles to the ventricles to the right auricle
D Deoxygenated blood from the left ventricles to the right auricles
E Oxygenated blood from the lings to the right auricles

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Question 1799:

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

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A Blood plasma
B Leucocytes
C Thrombocytes
D Erythrocytes
E Lymphocytes

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Question 1800:

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

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A Pleural membrane
B Intercostal muscles
C Diaphragm
D Pericardium
E Epiglottis

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