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Biology Past Questions and Answers

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Waec Biology Questions

Question 1901:

Which of the following statements is not true about chromosomes?

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A Each chromosome is made up of two chromatids
B Body cells have diploid numbers of chromosomes
C Homologous chromosomes do not occur in pairs naturally
D The sex cells have haploid number of chromosomes
E Chromosomes have many tranverse bands

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Question 1902:

Cross-breeding is a way of

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A Developing superior varieties of plants only
B Developing superior varieties of animals only
C Developing disease-resistant varieties only
D Encouraging random reproduction in agriculture
E Applying the principles of heredity in agriculture

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Question 1903:

The wings of bats and birds, the flippers of whale and the fins of fish are examples of

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A Adaptive radiation
B Vestigial organs
C Continuous variation
D Convergent evolution
E Divergent evolution.

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Question 1904:

Which of the following is a social insect?

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A Mosquito
B Butterfly
C Honey bee
D Grasshopper
E Cockroach

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Question 1905:

The phenomenon whereby some organisms get established in an environment after struggling for existence
by taking advantage of some special features possessed by the organism is called

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A Partial selection
B Artificial selection
C Natural selection
D Mutation
E Competition

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