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Biology Past Questions and Answers

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Waec Biology Questions

Question 1701:

Which of the following sequences is the correct route of the transmission of impulses along a reflex arc?

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A \(Receptor\to sensory neuron \to synapse \to intermediate neuron \to synapse \to motor neuron \to effector\)
B \(Receptor \to motor neuron \to synapse \to intermediate neuron \to synapse \to sensory neuron \to effector\)
C \(Effector \to intermediate neuron \to synapse \to motor neuron \to synapse \to sensory neuron \to receptor\)
D \(Effector \to motor neuron \to synapse \to sensory neuron \to synapse \to intermediate neuron \to receptor\)

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Question 1702:

When viewing an object that is close to the human eye, the

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A Eye lens becomes thin
B Ciliary muscles relax
C Suspensory lens become taut
D Eye lens becomes fat

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Question 1703:

The diagram above is an illustration of the human sperm. The part labelled I is the

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A Acrosome
B Nucleus
C Mitochondrion
D Tail

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Question 1704:

In the diagram of the human sperm above, the function of the part labelled II is to

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A Fuse the ovum during fertilization
B Generate the energy for the sperm to swim to the fallopian tube
C Help the sperm to swim forward
D Dissolve the membrane of the egg during fertilization

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Question 1705:

Which of the following types of placentation is not common amongst syncarpous pistils?

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A Marginal
B Axile
C Parietal
D Free central

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