Jamb 1991 Biology Questions
Question 36:
When two heterozygotes mate, the dominant trait will appear in
- 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
Question 37:
Which of the following characters is NOT sex-linked?
- A River blindness
- B Baldness
- C Haemophilia
- D Colour blindness
Question 38:
The most important factors which influence an organism's way of life in its habitat are
- 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
Question 39:
Organisms in an ecosystem are usually grouped according to their trophic level as
- A Carnivores and epiphytes
- B Consumers and parasites
- C Producers and consumers
- D Producers and saprophytes
Question 40:
The above diagram represents a competitive interaction between organism in communities I and II. Which of the following statements is CORRECT?
- 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