Jamb Biology Past Questions For Year 1997
Question 11
Which is the most important pollutant of the marine environment in Nigeria?
- A. Insecticides
- B. Sewage
- C. Oil
- D. Inorganic fertilizers
Question 12
In a soil sample, the relative amouunts of the different soil particles can best be determined by the process of
- A. filtration
- B. centrifugation
- C. precipitation
- D. sedimentation
Question 13
After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is
- A. Euglena â water lily â Spirogyra â grass
- B. water lily â Spirogyra âgrass â Euglena
- C. Spirogyra â Euglena â grass â water lily
- D. Euglena â Spirogyra â water lily â grass
Question 14
The Southern Guinea Savanna differs from the Northern Guinea Savanna in that it has
- A. lower rainfall and shorter grasses
- B. less grasses and scattered trees
- C. more rainfall and taller grasses
- D. less arboreal and burrowing animals
Question 15
What combination of character should a prey develop to survive the environment of its predator?
- A. Camouflag, well developed limbs and effective vision
- B. Showy colour, big body and well developed limbs
- C. Camouflage, big body and effective vision
- D. Showy colour, well developed muscles and an acute sense of smell
