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Biology Past Questions and Answers

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Biology Questions

Question 721:

When two heterozygotes mate, the dominant trait will appear in

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A The F<sub style='font-size: smaller;'>1</sub> generation only
B The F<sub style='font-size: smaller;'>2</sub> generation only
C Both the F<sub style='font-size: smaller;'>1</sub> and F<sub style='font-size: smaller;'>2</sub> generations
D Neither the F<sub style='font-size: smaller;'>1</sub> nor F<sub style='font-size: smaller;'>2</sub> generation

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Question 722:

Which of the following characters is NOT sex-linked?

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A River blindness
B Baldness
C Haemophilia
D Colour blindness

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Question 723:

The most important factors which influence an organism's way of life in its habitat are

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A The physicals and biotic enviroment
B Food and water availability
C Temperature, water, light and predator-prey relationship
D Competition for food and spaces

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Question 724:

Organisms in an ecosystem are usually grouped according to their trophic level as

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A Carnivores and epiphytes
B Consumers and parasites
C Producers and consumers
D Producers and saprophytes

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Question 725:

The above diagram represents a competitive interaction between organism in communities I and II. Which of the following statements is CORRECT?

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A The population of I was higher than II at the beginning of the experiments
B II was wiped out from the enviroment at the end of the experiments
C The population of II was always lower than that of
D The population of I was lower at the end of the experiment than at the beginning

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